We were really impressed with Texas Instruments' OMAP 3-based mobile development platform when we saw it running Android earlier today, and the hardware seems to hold up well to all sorts of video-accelerated magic for a multitude of Linux-based interfaces. Not so much with Windows Mobile 6.5. Granted, this is a very early build of the OS according to Microsoft, and is lacking all sorts optimization mojo that will go into the final product due end-of-year-ish, but at the same time this is basically an interface skin to Windows Mobile 6 that Microsoft has had nearly a year to work on since 6.1, and it's not exaggerating to say that performance is a complete joke
