The software is easy to use, but the question about your data being used to improve TurboTax is miss leading and if you accept it you are not able to undo this selection.
I was pleased with the online filing experience. I have used professional tax preparation software before and was tempted to to use the download version to have more control, but this was not necessary. The program anticipated questions well, was reassuring about the process, and never left me feeling I could not go back and revise. I plan on using it again.