I have used H&R Block tax preparation software for more than ten years. It does the job well. Obviously, I am satisfied with the results and every year there are improvements.
Pros: Easy to prepare, Maximizes refund, Easy to import documents
This program covers most filing issues and obscure corner cases. There are a few things (such as pensions from foreign gov that do not have TIN numbers) that throw the software for a loop.
Support is minimal and problems with operation of the program or handling of specific tax issues are not addressed. It is not possible to contact HR software support.
I've used H&R for several years. Pleased with it but I have not used any others to compare it to. I was not pleased this year with having to use actual IRS forms and instructions to figure out a specific SS tax deduction. I believe the software should have had this included. But this was a one time item and won't be an issue next year.