I found an error in my NY state filing... the program would not let me FILE my taxes until an "error" was fixed. The "error" notification referred me to a Form that had nothing to do with the actual ERROR itself. I had to McGiver the error to get past it so I could file.
Best feature is the incorporation of previous year's data and carry overs. Also I had a complicated situation this year were I sold a house and moved so I had two State returns as well as the capital gains worksheet from the house. The system stepped me through it very easily.
I messed up on my kids information and H&R revived the e-file rejection summary and told me what to fix. If I had mailed in my return this process would have taken months to resolve. I might just use my local office because they have direct support with the IRS. This would give me the most peace of mind.
Pros: Easy to prepare, Maximizes refund, Easy to import documents, Fast