I've been using H&R for, hmm, 5 or 10 years now. For the most part, it's very straightforward and easy to use. It gets awkward when you run into some odd points of tax law, but okay, tax law is big and complex.
You are still responsible for your taxes. No magic here, but it does help to navigate efficiently, provides useful information and streamlines the proces
Pros: Easy to install, Easy to fix issues, Easy to prepare, Easy to import