I'm currently using XTRSense 4.6 since I like the weather flip clock on my home page but I'm getting curious about Froyo. Conventional wisdom would suggest that 2.2 is a more advanced version of the OS but I'm seeing lots of people continuing to use and update 2.1. Why doesn't everyone upgrade to Froyo 2.2? What is the advantage of sticking with 2.1, other than the Sense UI? ...or is that all there is to it?