
I've been a 3 customer from the start in the UK, I now get something like 60% reduction on my bill because I've been with them for 4 or 5 years now. They did initially have crap handsets but thats because ALL of their handsets are 3G,2.5G,2G compatible, no other network in the UK uses 3G only phones... yes they're network was dire for about a year and a half, but thats sorted now, and in areas i used to get no reception at all, now I get full 3G. With regard to their customer service THIS is they're major stumbling block, sort that and they have a bright future, the ammount of times the people in they're indian call centre have lied to me to get me off the phone and to sort they're call quota for the day is silly, good thing I threatened to go to their exec board and copy in half of the department heads across they're UK arm, it got the trick done (and I wasn't lying)... thankfully they DO have a UK based call centre...
My opinion of all the other operators..:
T-Mobile - Money robbing - my friend finished his 18month contract with them and thought sweet, time to upgrade... no no, only if he wanted to pay the £140 upgrade fee to the N95, the only phones availible for upgrade were the budget phones that you see in Tesco for £40! Crappy network - almost never any coverage and when you do get network, call quality is always quiet (have tried on multiple handsets no different) and of poor sound quality.
Vodafone - Good network, good phones, but stupidly expensive! Given they're position you'd expect them to be a hell of alot cheaper but they're not! (probably expensive because of all the companies they've been buying...)
Orange - ok I guess, but only an average network... and thats about it can't say anything bad about them but @ the same time can't say anything good! Which I think says it all!
O2 - Probably the better of the incumbents... average pricing, good handsets and excellent network.. similar feel as Orange though.
In my opinion, me being 23 years of age, 3 is the best network to choose, yes you have a limited amount of handsets but most of the handsets can do some good things... whats the point for example in an iPhone??? you can get all of those features from the Nokia N73 (which incedentally I have, not the best phone in the world but farrrrrrrr from the worst!) and most of them work better... plus your not locked to one network... anyway back to my point about 3, they have possibly the best line up of contracts and if they don't choose the closest to what you want and use the 'bolt ons' or whatever they're called... the fact you can stream tv to your phone for a 24hour period and it only costs you 99p... thats brilliant value (or £5 for the month) or that you can add X-Series functionality for £5....
just my 2cents...