I have used the H&R Block software for my personal taxes since the 90's. I have never had an issue. I especially like the "help" add-ins for clarifications to some of my situations or for explaining new regulations. e-Filing is such a breeze and I have confidence that when my forms are submitted to the IRS they will be accepted, and a refund will be forthcoming shortly.
Pros: Easy to prepare, Maximizes refund, Easy to import documents, Fast