New phone - SE K7501/W800i/Nokia 6230i or something else..?

I'm looking for help! Need to upgrade my orange phone this week and am struggling with what to buy. Have had Nokias fr 2 years and been very happy with them. Tried a samsung e770 last week as my upgrade, hated it and its going back tomorrow!
I currently have a 6230 and am very happy with it. I like the new l'amour swing phone and feature suit me but only 10MB memory and no chance to expand so its out of the window!
I don't real need a 3G phone, and think the N70's a bit too bulky for me. I will get a 6230i if i can't get anything else but fancied a change!
Seriously considering SE K750i or w800i and would appreciiate any feedback.
Cheers