I second the vote for the 8700... I've been using mine for about 3 months now and it's been great... Battery life is good, reception is good, and the screen with the built in sensor is incredible... The holster is a bit awkward to use, but you get used to it... I also sync w/ Pocketmac and have not had any problems... I've heard of people having issues w/ Pocketmac, but I've had none...
I replaced my Treo 650 with the BB and it was one of the best moves I've made... The Treo was nothing but a constant headache- between the daily crashes, and the syncing problems I had to exercise supreme will power not to roof that thing on a regular basis... The BB has NONE of those issues...