I've had 1 for about three weeks,no major problems with it,sometimes has a long pause between options which is kind of annoying when you're trying flicking through the menus. Battery life is ok,remember its a biggish colour screen. Did have problems unlocking it , most market stalls didn't have the software to do it,found someone who did it on ebay for a tenner,sent the code within 20 minutes. Have since purchased a cable,have about 11 minutes of polyphonic ringtones and 43 photos stored on the phone and still have 47% free space left.
I've also got one of these. I really don't notice the menus as being that slow, but I haven't used many different phones so I have nothing to compare it to.
I did notice the camera quality, while a large resolution, is a bid dodgy. It tends to have quite a few lines and what I can only describe as noise on it when seen on a computer monitor, but considering it's a camera phone, it's perfectly acceptable.
I've also been impressed by the memory of this phone. I've got many photos, and about 20 full midi files as ringtones, and I still have 45% memory free.
Impressive phone for the price! One of the best screens I've seen on a phone!