I like windows mobile 6.5, it is actually stable and fast IMO. What I despise is the UI, they actually took a step backwards compared to 6.0. However, after killing palm, like with IE they went stagnant, and now have to deal with a dead OS overshadowed by nearly anything else. If they would have "windows 7ened" their mobile OS in time for the win7 launch their mobile OS future might not be so dim. What I like about win mobile is the wide and open (compared to apple) variety of aps, I can install whatever browser or media player I want.