I have my Cingular SX66 running Windows Mobile 5 now...with sounds...performance is pretty solid...it took a lot of tweaking. Overall, I like it. You do lose the Cingular apps like the GPRS connect which I thought was pretty slick...also I'm unable to send Multi-Media messages now...but I've been able to get most of my WM2003 apps that I "must have" working. I'm pretty happy.

If anyone is interested, I'd be more than happy to post a step by step guide for how I got here.

CS