Of course you could have a totally different view from everyone else above, like me. I had the Nokia 6230 and dumped it in favour of the SE T630 a few months ago.
Whilst I wholeheartedly agree that Nokia's are more user friendly in terms of their menus etc, the issue for me was Nokia's arrogance when it comes to bluetooth. They seem to think that provided their phones talk to their bluetooth accessories that everything is ok. The 6230 will not communicate with the bluetooth kit factory fitted in my car which is why I had to switch to the T630. My wife has a Nokia bluetooth 610 car kit fitted in her car and it will only communicate with a limited range of Nokia handsets (6310i will not work either) and certainly not my SE T630.
Despite being a Nokia fan in the past I would say they are missing the plot now when it comes to business users.
Of course if this is not an issue for you then go with the Nokia.