SO's against IO's

I have just done a full respec on my main, noting down the enhancements and slotting of my powers and adjusting to make the build more effective.

Main is a Katana / Super Reflex Scrapper.

Changes:
previously had stamina 6 slotted, reduced to 4.
standardised defence slotting: passive powers are 3 slotted with def IO's, toggles had 3 defence and 2 endurance IO's.

Most attack powers are 5 slotted, main attacks ( soaring dragon and golden dragonfly ) 6 slotted.

Now i've bunged a few defence set IO's in one of the powers and it definately seems my weakpoint compared to before the respec. I'm going to adjust which parts of the IO set I use in the power, but is there a downside to IO slotting that I'm not aware of?

has anyone run a comparison between a fully slotted IO toon and one using invention sets?

For a defensive power you'll need to put in 4 set IOs to get the same defence buff 3 SOs would have given you. So for a passive unless you want any specific set bonuses it's probably not worth getting the IOs.

However, I have found that slotting set IOs has definitely improved my Kat/SR. With set bonuses (and Divine Avalanche) I am very close to the magical 45% defence mark and my end use is excellent, my end bar doesn't move.

Below is my current build:

Hero Plan by Mids' Hero Designer 1.20
http://www.honourableunited.org.uk/mhd.php

Miss Expendable: Level 50 Natural Scrapper
Primary Power Set: Katana
Secondary Power Set: Super Reflexes
Power Pool: Fitness
Power Pool: Leaping
Power Pool: Leadership
Ancillary Pool: Body Mastery

Hero Profile:
------------
Level 1: Sting of the Wasp T'Death-Acc/Dmg:40(A), T'Death-Dmg/EndRdx:40(3), T'Death-Dmg/Rchg:40(3), T'Death-Acc/Dmg/EndRdx:40(5), T'Death-Dmg/EndRdx/Rchg:40(5), Acc-I:40(11)
Level 1: Focused Fighting RedFtn-Def/EndRdx:35(A), RedFtn-Def/Rchg:35(15), RedFtn-Def/EndRdx/Rchg:35(15), RedFtn-Def:35(37), RedFtn-EndRdx/Rchg:41(40), RedFtn-EndRdx:35(43)
Level 2: Flashing Steel Acc-I:35(A), M'Strk-Acc/Dmg:35(7), M'Strk-Dmg/EndRdx:35(7), M'Strk-Dmg/Rchg:35(9), M'Strk-Acc/Dmg/EndRdx:35(9), M'Strk-Dmg/EndRdx/Rchg:35(11)
Level 4: Focused Senses RedFtn-Def/EndRdx:41(A), RedFtn-Def/Rchg:41(13), RedFtn-Def/EndRdx/Rchg:41(13), RedFtn-EndRdx:41(33), RedFtn-Def:41(39), RedFtn-EndRdx/Rchg:41(46)
Level 6: Swift Run-I:35(A)
Level 8: Divine Avalanche Acc-I:40(A), Acc-I:40(17), Dmg(17), Dmg(19), Dmg(19), DefBuff-I:40(21)
Level 10: Practiced Brawler RechRdx-I:35(A), RechRdx-I:35(21)
Level 12: Combat Jumping DefBuff-I:35(A), DefBuff-I:40(39), DefBuff-I:40(48)
Level 14: Super Jump Jump-I:35(A)
Level 16: Health Heal-I:35(A)
Level 18: Build Up RechRdx(A), RechRdx(23), RechRdx(23)
Level 20: Stamina EndMod(A), EndMod(25), EndMod(25)
Level 22: Quickness Run-I:35(A)
Level 24: The Lotus Drops M'Strk-Acc/Dmg:41(A), M'Strk-Dmg/EndRdx:41(45), M'Strk-Dmg/Rchg:41(46), M'Strk-Dmg/EndRdx/Rchg:41(46), M'Strk-Acc/Dmg/EndRdx:41(50), Acc(50)
Level 26: Soaring Dragon Acc(A), C'ngImp-Dmg/EndRdx/Rchg:41(27), C'ngImp-Acc/Dmg/EndRdx:41(27), C'ngImp-Dmg/EndRdx:35(31), C'ngImp-Dmg/Rchg:41(31), C'ngImp-Acc/Dmg/Rchg:41(33)
Level 28: Lucky S'dpty-Def/EndRdx:35(A), S'dpty-Def/Rchg:40(29), S'dpty-Def/EndRdx/Rchg:40(29), S'dpty-Def:40(31), S'dpty-EndRdx/Rchg:40(48)
Level 30: Agile S'dpty-Def:40(A), S'dpty-Def/EndRdx/Rchg:40(33), S'dpty-Def/Rchg:40(40), S'dpty-Def/EndRdx:40(42), S'dpty-EndRdx/Rchg:40(48)
Level 32: Golden Dragonfly M'Strk-Acc/Dmg:35(A), M'Strk-Dmg/EndRdx:35(34), M'Strk-Dmg/Rchg:35(34), Acc-I:35(34), M'Strk-Dmg/EndRdx/Rchg:35(36), M'Strk-Acc/Dmg/EndRdx:35(36)
Level 35: Evasion RedFtn-Def/EndRdx:35(A), RedFtn-Def/Rchg:30(36), RedFtn-EndRdx:35(37), RedFtn-Def/EndRdx/Rchg:35(37), RedFtn-EndRdx/Rchg:41(40), RedFtn-Def:41(43)
Level 38: Elude RechRdx(A), RechRdx(39)
Level 41: Dodge RedFtn-Def/EndRdx:41(A), RedFtn-Def/Rchg:41(42), RedFtn-EndRdx/Rchg:41(42), RedFtn-Def/EndRdx/Rchg:41(43), RedFtn-Def:41(45), RedFtn-EndRdx:41(45)
Level 44: Assault EndRdx(A), EndRdx(50)
Level 47: Conserve Power RechRdx(A)
Level 49: Laser Beam Eyes Acc(A)
------------
Level 1: Brawl Empty(A)
Level 1: Sprint Empty(A)
Level 2: Rest Empty(A)
Level 1: Critical Hit
------------
Set Bonus Totals:
+10.5% DamageBuff
+10% Defense(Ranged)
+8.13% Defense(AoE)
+13% Enhancement(Accuracy)
+25% Enhancement(RechargeTime)
+49.7 (4.13%) HitPoints
+MezResist(Held) (Mag 2.75%)
+MezResist(Immobilize) (Mag 13.8%)
+MezResist(Sleep) (Mag 4.95%)
+MezResist(Stun) (Mag 4.95%)
+8% Regeneration
+7.88% Resistance(Fire)
+7.88% Resistance(Cold)



------------
Set Bonuses:
Touch of Death
(Sting of the Wasp)
+MezResist(Immobilize) (Mag 2.75%)
+18.1 (1.5%) HitPoints
+2.5% DamageBuff
+MezResist(Held) (Mag 2.75%)


Red Fortune
(Focused Fighting)
+MezResist(Immobilize) (Mag 2.2%)
+1.26% Res(Fire, Cold)
+2% DamageBuff
+5% Enhancement(RechargeTime)
+2.5% Defense(Ranged)


Multi Strike
(Flashing Steel)
+MezResist(Sleep) (Mag 1.65%)
+0.945% Res(Fire, Cold)
+MezResist(Stun) (Mag 1.65%)
+1.88% Defense(AoE)


Red Fortune
(Focused Senses)
+MezResist(Immobilize) (Mag 2.2%)
+1.26% Res(Fire, Cold)
+2% DamageBuff
+5% Enhancement(RechargeTime)
+2.5% Defense(Ranged)


Multi Strike
(The Lotus Drops)
+MezResist(Sleep) (Mag 1.65%)
+0.945% Res(Fire, Cold)
+MezResist(Stun) (Mag 1.65%)
+1.88% Defense(AoE)


Crushing Impact
(Soaring Dragon)
+MezResist(Immobilize) (Mag 2.2%)
+13.6 (1.13%) HitPoints
+7% Enhancement(Accuracy)
+5% Enhancement(RechargeTime)


Serendipity
(Lucky)
+4% Regeneration
+9.04 (0.75%) HitPoints
+3% Enhancement(Accuracy)
+1.25% Defense(AoE)


Serendipity
(Agile)
+4% Regeneration
+9.04 (0.75%) HitPoints
+3% Enhancement(Accuracy)
+1.25% Defense(AoE)


Multi Strike
(Golden Dragonfly)
+MezResist(Sleep) (Mag 1.65%)
+0.945% Res(Fire, Cold)
+MezResist(Stun) (Mag 1.65%)
+1.88% Defense(AoE)


Red Fortune
(Evasion)
+MezResist(Immobilize) (Mag 2.2%)
+1.26% Res(Fire, Cold)
+2% DamageBuff
+5% Enhancement(RechargeTime)
+2.5% Defense(Ranged)


Red Fortune
(Dodge)
+MezResist(Immobilize) (Mag 2.2%)
+1.26% Res(Fire, Cold)
+2% DamageBuff
+5% Enhancement(RechargeTime)
+2.5% Defense(Ranged)






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I had a look at your build, carefully replanned mine, worked out the stats in hero designer...

Then realised monkey boy here only had the parts of the "luck of the gambler" sets slotted that affect recharge / endurance etc and very little defence boost....

kinda answered my own question, the answer is im very very stupid sometimes