I've been using Lacerte for about 23 years. I sold 90% of my practice a couple of years ago, but still do about 40 1040's, 15 1041's and about 15 total others (1120-s, 1120 & 1065's). The returns I still do are fairly voluminous but not super technical. Some have roughly 20 K-1's to input, and some have a lot of trading activity. I've been very happy with Lacerte, but the cost has just become too much. I plan to look at Drake too.
Are you ATX users happy with the product?