I think the T-MO version is the better way to go personally, you get more ram, rom, and the 16gb memory card for the same money if not less (pricing still hasn't been announced). The only drawback I can think of immediately is no 3G. Take a look at the spec sheet for the european HD2, t-mo HD2 and then the IPhone 3GS...on that compare the 3G bands and see which supports what and what band Fido uses. Comes down to what you want, more memory or faster internet speed in the end.