I will say this, I used a lot of the same sets on most of my powers at level 50. All my target AoE powers have Positrons Blast, accept for my Grenade which has Kenetic Crash on it. My Sniper Rifle has Sting of Manticore and my slug and burst attacks are slotted with the Orange level 50 ranged damage set, I don't remember the name. Other than that, I slotted sets that gave me pure damage and got as many defense powers as possible. Stealth Feild Generator, Weave from the Fitness Set and Scorpion Shield from Mace are all six slotted with Red Fortune for. Good set that gives damage bonus. Lot of people like Luck of the Gambler, but I prefer extra damage. Then you've got your pets. The spiderlings form Mace Mastery, I gave them a good orange set for level 50 recharge intensive pets, I don't rememer the name of that either. I didn't slot my gun drone, but I did put a 53 SO damage on him, so he's alright. Then I have Hasten on there. Hasten just means that you hurt things... And badly. With all of my sets, this AT goes from being really crappy about endurance to GREAT with it. I never run out or even get low. Malta Sappers don't even bother me much. Of course, that's becuase I have Fitness Slotted as well. I think I had enhanced performance. It's the set with the plug on it. Great set, give you +10% regenration too. Gotta love it!
And then there's my incarnate stuff.
T4 Musclature for my 45% buff
T3 Void with a percent chance to do more damage to Liuetentants or lower in case I suddenly get caught in the middle of a bad situation and get swamped. That knockback will save you. It really makes up for AR not having a nuke. That and Full Auto are the only attacks I ever need sometimes.
T3 Reactive 50% Res Debuff with a 25% DoT
T3 Victoria and Battle Orb, though I'll be replacing that with an ACU soon.
And a T3 Barrier for redundant defenses.
If I run into anything REALLY tough, that's when I summon ALL of my pets, Snipe, Full Auto, Void and then go to town with my pets either running interferance with other mobs or just barraging whatever mob is giving me trouble.
This is also great for farming. Those pets make me feel like an MM with better DPS, hehe.
Hope that helps, the build works for me. I have a lot of fun with it and I'm experimenting with other stuff, but honestly, since I20 came up, I've been getting groups together for +4 TFs. So it's REDICULOUSLY easy to get the money together for builbs at this point.
I wonder... +4 Barracuda for lulz? I think it would be fun, but it would be HARD to say the least. Harder than Lambda to say the least. But since everyone has Judgements now... It might be relatively easy to just clear a room full of bosses now.
Anyway, happy hunting!