Everything seems good so far, but no one is answering their phone so no luck testing the 'quality' out that was an issue with 2.08 / 2.09. Currently I'm BT'd to my headset, GPS, and laptop and all seem to work fine.
I have let it go into standby twice now, with bluetooth working and both times it came back up working and the dpad working... obviously further testing is needed but so far so good. Also turning hands free on / off seems to work well, which I was having problems with 2.16.
My only feedback thus far is to remove some of the bloatware (java, music store, messenger, windows live) personally I'd love to have big button dialer, the 8 comm thing, but everyone wants everything differently so if i have to install it.. no problem