I've been using ufile.ca for years, but I've never used Quicktax, so I can't offer any comparison. I mean, you know, it does the job. I'm not entirely sure what makes one product better than another outside of ease of use, and I've never found Ufile confusing or anything.

You don't have to pay until you want to actually get the file to submit via netfile, so you can always create an account and check it out without any obligation to give them money.