We've got a fairly complicated mess to deal with every year. Used to have accountants- accountant #2 found us an extra $3K that accountant #1 had missed and on-and-on. Eventually we found out that they basically plug everything into a program and what it spits out is what you get.
About 6 years ago after the accountant forgotten to include all of the recording costs against the cd we had made that year we decided enough was enough and we started using Turbo Tax and never looked back. Sure, there might be something it doesn't know, misses, or whatever, but it's every bit as accurate as the pros (there's probably an accountant on DRTV who is going to scream). It flags things when they seem outrageous. We're happy with it and it costs about $100 a year included state forms. We still print out and mail so we have paper copies, but we also have pdf copies of everything.
It's win-win I think.