
Here is my fire/energy brute and son/son corruptor.
I was really surprised at the speed and low end cost of the fire primary - wow! Damge is not as spectacular as the other sets, but boy is it end/speed efficient.
Son/Son also seems to be a great second in a dual - autofire on shriek makes for a handy debuff.

This is my stone/da & rad/thermal pair. Stone is a brute set I've been looking forward to playing for quite a while, and I was not let down. The sheer "smash factor" of stone is awesome, right from the start. Stone does have very high end costs, but somehow it seems worth it when you have 2 attacks capable of one-shotting at level 2 or 4. (4 is a better choice or else your fury building is dependant solely on brawl...)
/thermal is of course the pure-bot type secondary, so I had to do one eventually. And autofire on a rad attack is a nice debuff.

This would be my ss/fire and son/cold. I wasn't particularly inclined to do ss again after having played an ss/ice tank to the mid 30s, but I figured rage made an interesting pair with blazing aura. Fiery embrace + rage will actually allow for some interesting damage #s too, albeit rarely.
I've already got an active rad/cold corr that I'm playing more as a solo blaster type, so I don't feel so bad for just using this one as a backup buffer.

I haven't got a chance to run this pair together yet, as I started the brute a while back and need to catch the corr up 1st. I'm anticipating a very late bloom as far as duos go, as it won't be much of a buff-kill relationship until speed boost at 20. Not sure if I want to take assualt/tac early to offset that or what - the corr here has the build I'm least certain of. I can see how it could be a really fun solo blaster type power combo too.... I may wind up playing them solo and then matching up at 20.
/end pointless screenapallooza and dialogue no one is monitoring.