I admit I didn't pay as much attention as I should have in school, but I don't know when Brail became part of North America!
Seriously, I am amongst those whom uses what works. I've tried Cingular service and it's vey spotty where I live. The basic rule in my neighborhood is if you want service in your house, you need Verizon or Alltel. The GSM coverage here is all 1900mHz and doesn't seem to penetrate well. It will work outside my house, but not inside.
Regarding the poll, wouldn't it be a bit skewed on this forum since there seem to be a lot more GSM Smartphones than CDMA? VZW only has one, count 'em, one WM Smartphone.