There are so many different triggers and stuff coming out now, it's getting very confusing. Sorry if this makes things worse!
I'm liking the look of the new Cactus V6 triggers, for auto-TTL on-camera via pass-through, plus manual power control of remote guns. Thinking about how I actually work, that covers it - same for a lot of other folks too, I think. Plus it works with pretty much any auto-TTL enabled gun on any camera (including my older 580EX guns that work superbly, don't want to sell, but don't have the EX-II gubbins inside). You can even mix different brands of flash gun together.
http://flashhavoc.com/cactus-v6-transceiver-now-available/