Sony Ericsson W600i / W550i

im in canada and considering this fon-it isnt carried by any of our carriers up here but luckily we have a few private places that offer imported fons-the only issue i have is that i am only able to get the tri band version of this fon-im wondering if any canadians have input onthe coverage on our carriers with triband equipment-i had a triband SE once b4 but took it back because the reception was awful-any input would be very much appreciated