I'm trying to find the right aerobars right now. Currently I have Profile Design GT Jammers. I like the idea of separate bars that can be adjusted for grip angle, length, pad angle, etc. Unfortunately, the Jammers don't put my wrists into the most natural position for my wrists (anyone want to buy them?). I've just ordered Forte T1 Aerobars and will give them a try.
It's definitely more difficult to handle the bike while riding in the aerobars; the first time I tried I nearly lost control of the bike (don't try this in traffic while learning!!!). It does get easier each time. The thing I'm also learning to deal with is that I need to keep reaching off one bar to do any shifting.