Yep I've just signed up on the same deal as you on 3. Seemed the cheapest with the phone 'free' that I could find.
Considering on pay as you go I was easilly putting 30 quid a month on it, a new
N95 for 18months for 24 quid a month cant be grumbled at.
Seems that phone contracts have been rejigged a lot recently. 2 years ago you could get a windows mobile phone from Tmobile or whoever for 20 quid a month but not any more (and the phones themselves seem to have doubled in price over a couple of years!).
Slim