I've always used Network up until the advent of Three, so I polled "Network: New Contract". My first try at Three was 3ToGo via The Link. Subsequently eBay for some USIMs and finally a local small dealer for a contract. I still go to the "Network" for my 2.5G handset/upgrade. Hate all the dealer chains, wont' use them on principle! If I want pain I'll go to Comeit.