I had a d600e, and I upgraded to a U700 because it had so many limitations.
U couldn't play music in the backround, and u couldn't download mo than 1 meg of data. But I should admit, it is a solia phone.
When I got my U700, I found out it can't take mp4 videos(CIF), it can only take 3gp videos(QCIF), and that's disappointing for a phone which is so expensive. That's my main gripe.
I thought by purchasing a U700, I will get rid of the Nokia N70, but instead, I will get rid of the U700.