For mine, the 3T Aeronova shape has blown away everything else - best-shaped tops imaginable.
The price for these is crazy though, too rich for my blood. Happily, a Chinese mob called Toseek has ripped them off, and you can get those for something like 10% of the price.
Sure, lots of folks will baulk at sub-$50, sub-250g bars, but I figured I'd just try to destroy them by hand before installing, and they seemed like they're up to it. Now I've got em on three bikes, haven't died yet.