T-mobile has acknowledged the problems on t809 including the dust issue and the "buzzing" issue on some of the phone (phones manufactured prior to 02.06) and will replace it under their terms of warranty. And while it is not that ALL t809 that was made before 02.06 has defects, but a lot of them do. I have t809 and it's a great phone. I had Slvr L7, Razr, and d500 and yes, even tried the Chocolate phone from Korea (the one with the touch pad), but so far I like the t809 the most. While d600 has 2.0mp camera (i think..) and offers better battery life, it is too bulky for me and i hate how it sticks out of my jean pocket. If you don't mind charging your phone every 2 days and like the slimness, go with t809, you won't regret it. But if you would rather prefer higher resolution camera and better battery life, go with d600. they are all excellnet phones.