H&R Block is generally fine. However, I experienced some problems with an error in the Idaho State tax form 39R related to "tuition and fees", which took a total of about 6-8 hours of time to sort out. Eventually the error was acknowledged and fixed in the subsequent update. Also, the "Jump to Related" feature did not work on the majority of cells where I needed to figure out where an automatically entered value came from. Because I was able to diagnose an actual problem, and discover a number that the software entered in error that I would otherwise not have found, I was left with a feeling of uncertainty about how reliable the software is. I did purchase Turbo Tax and found a similar, but different issue with the Idaho tax form. Eventually got both programs to give me the same result, but it took a lot of time and luck.
I've been using H&R Block software for many years. It has always been very easy to use overall. The last few years I have had oil & gas royalties and found the program to be very confusing in that area. I've had to complete the return questionnaire several times in order to get the correct royalty information on the IRS forms.
The H&R Block Deluxe Software installs on most computers and is easy to use. I particularly like being able to import data from tax returns from previous years. That is a major convenience. However, this year I did find that the software made some flawed calculations. These flawed calculations nearly caused me to submit an incorrect return.