My regen focused WP tanker build has approximately 600% base regen, with no foes in RttC. At six foes in range, she has more than 825%, Right now I do not have every regen bonus I plan on taking ultimately.
As an experiment, I am now levelling a WP tanker that will focus more on +defense bonuses than on +regen and +hp bonuses, to see if that performs better. This will take some time, because I will not pay inflated AH prices for the needed sets. But initial results are rather encouraging, and suggest that defense rather than regen is the way to go for IOs. I probably shouldn't be saying so out loud; the gougers may read this.
<《 New Colchis / Guides / Mission Architect 》>
"At what point do we say, 'You're mucking with our myths'?" - Harlan Ellison
I'm do it less for effect and more for personal amusement, lol. I worked out on paper how to fit in almost 5 of every +regen/+HP set bonus(not couting the +16%regen could only fit one of those). I just wanna see how high I can get it.
I regen 71.38 hp /sec with no foes in RTTC at level 50 on my wp tank.
I am an ebil markeeter and will steal your moneiz ...correction stole your moneiz. I support keeping the poor down because it is impossible to make moneiz in this game.
I'm regenerating 110.3 a second at level 50 with no foes. I went with a lot of regen and max HP. I guess I went that way because I miss the old days with my regen scrapper and wanted something that felt like that. 
My WP Tanker isn't particularly regen focused and regens 45hp/sec with no enemies at 50.
Here's MrLiberty's WP/SS build that was cooked up in another thread a while back. 110 HP/s with one enemy in range, capped to all typed defense except psionic, 70% Smashing/Lethal resists, and capped HP. I don't think you can min-max much more than this, really. Note that the empty slots are for the PVP IOs.
Hero Plan by Mids' Hero Designer 1.401
http://www.cohplanner.com/
[u]Click this DataLink to open the build![u]
Level 50 Technology Tanker
Primary Power Set: Willpower
Secondary Power Set: Super Strength
Power Pool: Leaping
Power Pool: Fighting
Power Pool: Leadership
Power Pool: Fitness
Hero Profile:
Level 1: High Pain Tolerance -- Numna-Heal/EndRdx(A), Numna-Heal/Rchg(13), Numna-Heal(33), Aegis-ResDam/EndRdx(43), Aegis-ResDam(45), Aegis-ResDam/Rchg(45)
Level 1: Jab -- KntkC'bat-Acc/Dmg(A), KntkC'bat-Dmg/EndRdx/Rchg(17), KntkC'bat-Dmg/EndRdx(42), KntkC'bat-Dmg/Rchg(42)
Level 2: Mind Over Body -- RctvArm-ResDam/EndRdx(A), RctvArm-ResDam/Rchg(3), RctvArm-ResDam/EndRdx/Rchg(3), RctvArm-ResDam(36), Empty(36)
Level 4: Haymaker -- KntkC'bat-Acc/Dmg(A), KntkC'bat-Dmg/EndRdx(5), KntkC'bat-Dmg/Rchg(5), KntkC'bat-Dmg/EndRdx/Rchg(9), P'ngS'Fest-Acc/Dmg(9), P'ngS'Fest-Dmg/Rchg(17)
Level 6: Fast Healing -- Numna-Regen/Rcvry+(A), Numna-Heal/EndRdx(7), Numna-Heal(7), RgnTis-Regen+(37), Heal-I(46)
Level 8: Indomitable Will -- LkGmblr-Rchg+(A), LkGmblr-Def(50)
Level 10: Rise to the Challenge -- Numna-Heal/EndRdx(A), Numna-Heal(11), Numna-Heal/Rchg(11), HO:Golgi(13)
Level 12: Combat Jumping -- LkGmblr-Rchg+(A)
Level 14: Quick Recovery -- Efficacy-EndMod(A), Efficacy-EndMod/Acc(15), Efficacy-EndMod/Rchg(15)
Level 16: Super Jump -- Jump-I(A)
Level 18: Heightened Senses -- LkGmblr-Def/EndRdx(A), LkGmblr-Def(19), LkGmblr-Def/Rchg(19), LkGmblr-Def/EndRdx/Rchg(21)
Level 20: Knockout Blow -- KntkC'bat-Acc/Dmg(A), KntkC'bat-Dmg/EndRdx(21), KntkC'bat-Dmg/Rchg(23), KntkC'bat-Dmg/EndRdx/Rchg(23), P'ngS'Fest-Acc/Dmg(25), P'ngS'Fest-Dmg/Rchg(25)
Level 22: Boxing -- KntkC'bat-Acc/Dmg(A), KntkC'bat-Dmg/EndRdx/Rchg(36), KntkC'bat-Dmg/EndRdx(37), KntkC'bat-Dmg/Rchg(45)
Level 24: Tough -- RctvArm-ResDam/EndRdx(A), RctvArm-ResDam/Rchg(27), RctvArm-ResDam(27), RctvArm-ResDam/EndRdx/Rchg(29)
Level 26: Weave -- LkGmblr-Rchg+(A), LkGmblr-Def/EndRdx(29), LkGmblr-Def(31)
Level 28: Rage -- GSFC-ToHit(A), GSFC-ToHit/Rchg(33), GSFC-ToHit/Rchg/EndRdx(34), GSFC-Rchg/EndRdx(34), GSFC-ToHit/EndRdx(34), GSFC-Build%(37)
Level 30: Maneuvers -- LkGmblr-Rchg+(A), LkGmblr-Def/EndRdx(31), LkGmblr-Def(31)
Level 32: Strength of Will -- S'fstPrt-ResDam/Def+(A), Empty(33)
Level 35: Taunt -- Annoy-Taunt(A), Annoy-Taunt/Rchg(40), Annoy-Taunt/Rchg/Rng(43)
Level 38: Foot Stomp -- Erad-Dmg(A), Erad-Acc/Rchg(39), Erad-Acc/Dmg/Rchg(39), Erad-Dmg/Rchg(39), Sciroc-Acc/Dmg/EndRdx(40), Sciroc-Dmg/Rchg(40)
Level 41: Hurl -- Apoc-Dmg/Rchg(A), Apoc-Acc/Dmg/Rchg(42), Dev'n-Acc/Dmg/EndRdx/Rchg(43), Dev'n-Dmg/EndRdx(46)
Level 44: Swift -- Run-I(A)
Level 47: Health -- Mrcl-Rcvry+(A), Numna-Heal/EndRdx(48), Numna-Heal(48), Numna-Heal/Rchg(48)
Level 49: Stamina -- Efficacy-EndMod(A), Efficacy-EndMod/Acc(50), Efficacy-EndMod/Rchg(50)
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Level 1: Brawl -- P'ngS'Fest-Acc/Dmg(A), P'ngS'Fest-Dmg/Rchg(46)
Level 1: Sprint -- Empty(A)
Level 2: Rest -- Empty(A)
Level 1: Gauntlet
Thats a nice build. Mine is gimped ion a few places for the proper spread of ridiculous regen, lol. For example i had to drop an invention slot into brawl so I could pop 2 pounding slugfest(8% regen) into it. But if I did my math right he'll have 5 of each and will just be a major annoyance to anything that doesnt 1 shot him, lol.
I'm working on a heavy regen WP build, like unnecessarily over min/maxed kinda regen build, lol. But I wanted to get some basis for comparison so My question is, What is your Level, +regen numbers? (% and HP per sec) I just wanna see what kind of numbers are typical for various levels.