For the last 3 winters we have used a Tracfone that came with the double minuts plan. Since we are in the US for 4 months it gets used enough that the time keeps carrying over. It is now good until Oct 2014.
Cell coverage has been generally good. Only a couple of times that we did not have service - just like any cell phone.
I put a suspend service on my Rogers Blackberry. It costs $5/ month and then will revert back to my normal plan.
According to Rogers, even with the plan suspended he Blackberry will still be able to make 911 calls.
Getting US service from Rogers as noted above is ridiculous
A 200 minute Tracfone card that with the double minutes add 400 minutes costs $39. It adds 90 days to the service period.
The phone does texting and also will browse the internet. TIme deducted is not much.
One thing to wath out for - some prepaid phones will not call to cell phones in Canada from the US. One reason we chose Tracfone.