I echo TaxCPANY. I went Proseries for 2013 tax year, after 10+ years on ATX. There were a few bells and whistles I liked. But just like with Sage 50 and QuickBooks, there's things you're going to love about one program over the other and things you're going to hate.
I must give ATX kudos. I do non-profit returns. I did 990 extensions on 5/15 successfully in ProSeries. I was so busy and waited till 6pm on 8/15 to start e-filing my 2nd extensions for 990 returns only to find ProSeries doesn't do 2nd extensions. I was in big trouble and ATX bailed me out. I had ATX 2013 installed (unlicensed demo) and was able to roll over 2012 data and create my 2nd extensions. The e-filings went through and got approved quickly. Needless to say I slept peacefully that night. Now, I'm trying to do state returns from non-profits in ProSeries only to find there are no state returns at all. ProSeries sent me some CD with forms - I guess a bunch of PDF fill-in forms. ATX had a boat load of tax forms built in and with linking capability. Not so with ProSeries. So yes, I'm now using my ATX 2013 demo to create my state forms.
I'm seriously considering switching back to ATX. It's just I operate on a cloud server with connections through RDP. ATX says that's not an ideally secure environment.
Still, I miss ATX.
