Time for tranny swap

OK, the auto tranny finally died, so it’s time to swap it out (thank God). I’ve been looking around for the ins and outs of the different trannies, but not finding much. My plans are to keep the b18a in the car, but it will get reworked and turboed in the end. Someone help me out here, please, and post the different trannies that will swap into my 91 gs, and the advantages/disadvantages to each.