For many years, I used Quicktax because it was easy and instructive. It had a pretty interface and I could always see in the upper right corner how much of a tax refund, I was getting. At $39.99, it was expensive, but "the easy to follow quicksteps" made me feel like a tax auditor.
This year Quicktax allowed only two refunds per customer. This ticked me off, so I checked out the competition and got UFile at Best Buy for only $19.99. You can do eight returns with this software and I've done two already. I finished both tax returns in about 30 minutes.