well been with tmoble 15 or so years, even before it was tmoble..anyways, my 1st blackberry was the 8320 and that was in december..really sweet phone but about 4 week ago i purchased the 8900...man this phone is pretty sweet..the 8900 has buttloads of memory but the 8320 not so much if you dig apps. with my 8320 i was always looking at the memory and deleting stuff. Dont know to much about the new8520 but i think its a step backwards from the 8900. but still a sweet phone and of course you get a track pad with the 8520 which i would love..oh and on the 8900,lots of people have problems with the track ball even me with a the phone being new, i did replace the trackball myself on my 8900 and it was pretty easy, i put a G1 all black in in it and it rocks, anyways hope this helps....I LOVE MY 8900
