well from what ive been able to tell the best bang for the buck is to stick it out on the initial purchase price a bit and get the 3, its big and decently fast.....and your only talking about 100-200K difference between the 1A 2 and 3 fuel consumption is obviously going to be higher but you make up for that with speed......as far as the Slojave goes, i pray i never lose an engine after rotation on a hot day at max weight because theres no climbing with that thing...its anemic