I have been using H&R Block tax software for at least 10 years. Software is easy to use, helps with capital gains and taxes from mutual funds. Highly recommend using the software and don't easy to file electronically. My return was accepted in a matter of hours and had my refund in a week
This software evolved from TaxCut by MECA, which was my first tax software, so I feel at home with it. So far, both the IRS and the State equivalent have accepted the results. Doesn't work quite as well with Quicken as I would like.