There is no comparison at all between these phones. I would go for the D600 no question. Camera is 2mp on the D600 vs. VGA on the E398. The D600's screen is QVGA (very good) and the slider mechanism is unrivalled. The D600 is a fairly new phone, the E398 is very old. The only reason not to buy the D600 is price...but if you can afford $210 you should definitely go that direction.