by mp3, i'm assuming he means he can listen to mp3s on the phone. you can't listen to mp3s on a 6103 because it has very littly memory (and there is no memory card slot). he also wanted a decent camera which the 6103 doesn't have. the camera on that phone is junk. the t609 has a memory card slot and a 1.3 megapixel camera (not great, but a definite step up from the 6103).
the 6103 would probably beat the t609 in reception, but not by too much. The suggestion that the 6103 would be better for the OP than the t609 is not really true as it doesn't meet his requirements (at least as i understood them. he wasn't completely clear as you pointed out).