I know you're looking for customer feedback, and hopefully you'll get some here. Please also check out reviews on our Vendor Forum such as http://www.ramforumz.com/showthread.php?t=129153
We ship a lot of units to Canada. TLC can be installed by an experienced DIYer or auto professional - no drilling; bolts on. Most install time is spent running lines and positioning the air compressor and gauges if you get that option.
If you have any issues, we will take care of you.
We offer a 7 year warranty on the air bags and metal parts.
BTW, the bags are rated by Goodyear to -67 F.