Seriously, Ebb & Flow hands down! DWC is great and produces massive roots and all, but it all has to be done in a much more climate controlled environment. You get high room and then ultimately res temps and you're headed for a massive fail REAL quick. Or, should your air pump go out and you aren't able to replace it with another in say under four hours or whatever, you can just kiss your whole grow goodbye. Personally I want STOUT fuckin plants. I don't wanna have to worry about a record setting high temp day to invite Pythium(sp?) into the mix. I also wouldn't want a little ol' power outage to wipe out months of hard work.
Using Google, search ICmag and the Farm using terms "MPB" and "Undercurrent" and you'll see exactly what I mean. Those are Formula 1 type of grows... read: lots and lots of time, dedication, and $$$ being spent there.
For me personally it's all about the E&F, using Hydroton in heavy duty net pots and repotting to the next size up as the grow progresses.