I've been using H&R Block tax software for over 10 years after switching from another brand. H&R Block's software is thorough and easy to understand. I wouldn't use any other software!
waited for me to buy the State program to tell me that, as a non-resident, I would not be able to electronically file because your program can't handle it!
Easy to install and use. Good value for the price. It takes a bit of time to learn to navigate to view a particular form or go back to a particular set of questions, but well worth it.