That looks very close to my own build power selection-wise, with the most significant difference being that I swapped the positions of Taunt and Phalanx Fighting--that extra 5% defense is really important, and SD's taunt aura is strong enough to be able to tank without Taunt in most situations like most other Tanker primaries.
And there's no need to add Taunt SOs to attacks. Just move around a bit and keep smacking things.
The only two issues with an SO only SD/SS build are: endurance usage and not having a recharge buffer for Rage crashes. The latter is pretty important if you plan to use Rage a lot, as Rage has a 20% defence debuff that can only be countered by re-applying Rage. Being caught during a Rage crash with the def debuff hurts a lot.
My SD/SS, btw, I was able to fund quite easily without farming. I only got lucky with my Numina unique (as a merit roll--I've gotten two of them that way), but otherwise, cheap sets like Smashing Haymaker and Multi-Strike can bring you right to the verge of soft-capping. Picking up the Steadfast 3% def unique will take you over. At that point, you'll be a very amazing wrecking machine.
Oh, and I frankenslotted Shield Charge to maximise both recharge and damage. It's pretty scary in combination with Footstomp.
A well, if cheaply slotted SD/SS is simply a monster. My favourite Tanker of all time, as it's quite survivable, and very solid in the damage department (I've had Scrappers struggle to keep up with me).
Thanks for the advice. I just swapped around Phalanx and Taunt, I just wasn't sure how strong of a taunt aura AAO was, and whether I would miss having taunt at lower levels. I'm only level 4 on this guy at the moment, and I like to get a good build that I don't have to respec a lot leveling up planned out before hand. 
I'll look into getting him some sets as I level, and as I get the funds. (Bull Barrel is my highest char at the moment, only 41 - I've only played about 6 months total, back when I first registered, and just recently came back to the game a few weeks ago.) I've had a bit of success playing the WW game of buy low, sell high. I just haven't made it rich yet. 
Hey there folks,
I'm looking to start up a tanker, but haven't really played one much. I have a character concept in mind, and have pretty much worked out an SO build - I've done a little reading up on IO sets, etc. but I'll most likely have to hold off on those until later on when he can afford them.
A question I do have is, with an SO build, should I add in any Taunt SO's into my attacks? I know my job in groups will be to hold aggro as much as possible. I just wonder if those would be overkill, and I should just slot them like a regular attack.
Oh, and here's the build I'm planning on trying out, with regular IO's in place of the SO's. Any feedback on powers that you all think I'm taking too early, too late, or what have you, I'm open for suggestion. Thanks in advance!
Hero Plan by Mids' Hero Designer 1.401
http://www.cohplanner.com/
[u]Click this DataLink to open the build![u]
Captain Powerhouse: Level 50 Science Tanker
Primary Power Set: Shield Defense
Secondary Power Set: Super Strength
Power Pool: Leaping
Power Pool: Fitness
Power Pool: Fighting
Hero Profile:
Level 1: Deflection -- EndRdx-I(A), DefBuff-I(7), DefBuff-I(11), DefBuff-I(34), ResDam-I(40), ResDam-I(42)
Level 1: Jab -- Acc-I(A), Acc-I(3), Dmg-I(3), Dmg-I(9), Dmg-I(17), RechRdx-I(37)
Level 2: True Grit -- Heal-I(A), Heal-I(15), Heal-I(19), ResDam-I(37), ResDam-I(43), ResDam-I(46)
Level 4: Haymaker -- Acc-I(A), Acc-I(5), Dmg-I(5), Dmg-I(9), Dmg-I(17), RechRdx-I(34)
Level 6: Battle Agility -- EndRdx-I(A), EndRdx-I(7), DefBuff-I(11), DefBuff-I(15)
Level 8: Active Defense -- RechRdx-I(A), RechRdx-I(13)
Level 10: Against All Odds -- EndRdx-I(A)
Level 12: Combat Jumping -- EndRdx-I(A), DefBuff-I(13), DefBuff-I(50)
Level 14: Super Jump -- Jump-I(A), Jump-I(19)
Level 16: Swift -- Run-I(A)
Level 18: Health -- Heal-I(A), Heal-I(48), Heal-I(48)
Level 20: Stamina -- EndMod-I(A), EndMod-I(21), EndMod-I(21)
Level 22: Knockout Blow -- Acc-I(A), Acc-I(23), Dmg-I(23), Dmg-I(25), Dmg-I(25), RechRdx-I(34)
Level 24: Taunt -- Taunt-I(A), RechRdx-I(42)
Level 26: Shield Charge -- Acc-I(A), Acc-I(27), Dmg-I(27), Dmg-I(31), Dmg-I(31), RechRdx-I(31)
Level 28: Rage -- RechRdx-I(A), RechRdx-I(29), RechRdx-I(29), ToHit-I(42), ToHit-I(43)
Level 30: Phalanx Fighting -- DefBuff-I(A), DefBuff-I(43), DefBuff-I(50)
Level 32: One with the Shield -- ResDam-I(A), ResDam-I(33), ResDam-I(33), Heal-I(33), Heal-I(37)
Level 35: Hurl -- Acc-I(A), Acc-I(36), Dmg-I(36), Dmg-I(36), Dmg-I(45), RechRdx-I(46)
Level 38: Foot Stomp -- Acc-I(A), Acc-I(39), Dmg-I(39), Dmg-I(39), Dmg-I(40), RechRdx-I(40)
Level 41: Boxing -- Acc-I(A)
Level 44: Tough -- EndRdx-I(A), EndRdx-I(45), ResDam-I(45), ResDam-I(46)
Level 47: Weave -- EndRdx-I(A), EndRdx-I(48), DefBuff-I(50)
Level 49: Grant Cover -- EndRdx-I(A)
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Level 1: Brawl -- Empty(A)
Level 1: Sprint -- Empty(A)
Level 2: Rest -- Empty(A)
Level 1: Gauntlet