AC, what year AT's did you have. I agree that a few years ago the AT's were a little less than plush in there appointments. I think they put a very very nice boat out then, fit and finish and quality was clean and sharp and meticulous, just not as plush as some of the other brands. However the most recent boats they are making now will rival anything out there as far as plushness, fit and finish.
The only thing thats similar to Sonics is the walk around deck design. My 32' is a far bigger and deeper boat then the Sonic 31' which is the closest in size. The running surface is completely different and once you get away from the walk around, the decks are very different as well. Sonics are great boats but they are really not the same as an Active Thunder.