I'm currently on O2 and I get very good reception. My friend is on T-mobile and it's rubbish. I used to have Virgin and it was also awful (it runs on T-mobile's network). I got my phone through one of those 12 month line rental free website deals and my year is up. I'm not looking forward paying for my mobile and want to go on another free tarrif plan.
I'm suspecting not, but is it possible to sign up for another O2 package on one of the free line rental sites, or do I need to move to another network?