I've got a Nokia 6230 which I think is a cracking business phone.....however I was tempted by the new Sony Ericsson K700 and upgrade my wifes phone

so I could have a try.
Anyway to cut a long story short I ended up sending it back - it had some great features and gizmos but the basic phone functions (i.e 90% of what you actually use) were crap.
It kept dropping calls, the bluetooth was poor and the voice dialling was a complete joke.
It was an absoloute pleasure to go back to the NOKIA.
So I'm afraid after a couple of daliances with both Motorola (V600) and Sony (K700) recently, I am still of the somewhat boring view that Nokia still lead the way in terms of ease of use (intuitiveness) and phone performance.