you cant go wrong with a sony ericsson. i was upset wen you ruled out the K800

, but it hasnt got wifi, so fair enough. back to sony ericssons....go for the P990! its a far better fone....and although big....it luks like an expensive business fone, so still gets the same "respect", where as the W950, jus luks like a cheap fone from a distance.
only advantage of the W950 is the 4GB memory. a 2gig sonyproduo card is around £20 ish from ebay. i got one last week, for £17.50, including VAT. so memory wont realy be an issue.
the W950 is just a walkman fone. big memory, so its like an ipod but a fone. and next year, when apple's iphone comes out......(YES!U HEARD IT FROM ME FIRST! APPLE RELEASING AN iFONE) people are going to favour its large touchscreen, sleek slim looks, and its 2MP CAMERA! all starting at £130 ish over a W950.
soooo, go for a P990i!