I have On One Midge bars. I like them a lot, because 1) more leverage 2) don't bang forearms when it gets real rough, and 3) much more comfortable in the drops.
I end up spending roughly equal amounts of time in the drops, cross bar, and hoods.
I have bar end shifters, and I don't think I'd recommend On One Midge bars without them because the bars are kind of short without the extra extension provided by the barcons.