I went through the exact same process 2 months ago trying to set up payroll. In general, Canadians get some pretty horrible value out of any small/medium business service.

I was going to go with Ceridian but their web app doesn't support Mac. Because we're still small enough, I actually just rigged it up myself in Xero and then just have to use the nastiest 90s era website from my bank. That at least saved me the step of massaging exported data into Xero.

If you want some real price transparency on payroll apps, this is pretty hard to beat : http://wavepayroll.com/pricing