Pardon me, and my wisdom isn't quite as widespread as some, but really I must say a little more kindness and appreciation away from Ill/Rad? I mean definitely overall its very powerful when well developed at upper levels but for your consideration-
1. Tough target defeat specialist (vs. boss, EB,AV,even GM) -solo
Bots/Traps. While Ill/Rad is proven and effective. Bots traps I believe can perform more adequately with less challenge and without special build consideration for high amounts of global recharge. Also you (supposedly) can do it fairly easily at that point. For your consideration a link:
http://sites.google.com/site/silveratus/silver
no this is not me, just to show a little more than conjecture.
2. Team tough target defeat specialist (vs boss, AV/even GM) -assisting/enabling
This teammate would help the team defeat a tough target most quickly (defensive capability not necessarily important, offense may be)
Bots/poison Ninja/Poison. Bots for not having to worry about 'em so much, ninjas for best single target DPS. Really masterminds are fairly renowned for regularly containing the strength to defeat AV's of all sorts, its more of a choice of which ones BEST at it.
3. Large group defeat specialist -solo
Can defeat a large group most consistently and quickly, alone
http://www.youtube.com/watch?v=WI8OJ8B8b78
Bots/Traps versus +4x8 difficulty I believe. Or at least, incredibly impressive.
And thats all. I'm just very passionate about Masterminds. They've got a great deal of power, they just require pretty extensive bind control and knowledge (but trust me- learn and understand sandolphan's binds and you'll be able to make AMAZING binds with your own characters). I think they'd definitely overall score one spot on this list. Who knows?