I think it's difficult to compare some of the OSs that aren't even in the market yet...
I really like Palm's old, ugly interface, though.
Even though WinMo is prettier, I'm finding it much clunkier to accomplish normal tasks (seriously, what's the minimum number of clicks to go from your home screen to a non-speed-dial contact on WinMo?).
In many cases, I really miss my Palm device.
