I switched this year from ATX to Drake, buying Drake at a seminar in July. I had only switched to ATX fully from Lacerte after the 2009 season, keeping Lacerte around for a dozen high end and expensive returns thru out the years, on a PPR after 2009.
Based upon what the OP says, I will have to switch another 12 clients with heavy duty depreciation from Drake back to Lacerte
I think Drake, by and large, is a superior product over ATX in terms of speed of operation and less clunkiness. Of course Lacerte is vastly more capable then either of these two. I have two clients who work in 15 or more states each year, try that on ATX!