I have bought a Tri-band GSM Sony Ericsson Z600 unlock phone from overseas, and wanted to buy a SIM card from one of the cellular phone networks in Toronto. Which one (Rogers, Bell, Telus, Fido) has the best GSM reception and sound clarity across GTA and neighbour 905 areas (like Markham, Richmond Hill)? I know Rogers is the biggest cellular phone network across Canada, but their GSM network is below average. Any insight? Thanks. Jan 24, 04