What about reliability?! That is the major sticking point for me! I have been using ATX since 1997. The calculations have never been as unreliable as they are this year - depreciation disappearing after creating efile and printing, different bottom line each time the return is opened, entries disappearing, check boxes unchecking or checking themselves, .... among others. Not with every return, of course. It's intermittent, but I can't trust it.
I am on a standalone system. Although I haven't experienced as many crashes as some poor preparers have, the system is incredible slow compared to previous years. I checked the recommended requirements before the season started and my office computer was well above the requirements. But it was totally impossible to use with the program. Its XP Pro, with 4GB ram, it should have been fine. Instead I had to change to a new computer with Win 7 and 16GB. Maybe that's why I didn't have as many problems but it certainly should not have been necessary.