Larry,
I just checked to see where you live - small world, we have a place up on lake Sacandaga. Where will you be doing your boating? I see there is a Lake Galway.
I picked up a 97 Speedster the end of last year.
Will this be your first boat?
Are you mechanically handy?
What do you want to do on your boat? Fish, ski, wake board, sun, etc.
These questions will help the folks here guide you on your journey.
The main difference in the 96 models: Speedster has two motors and the Sportster has one. Keep in mind these are two stroke motors Rotax 717. The hull in the same 14.6 long and 85" wide. Speedster dry weight is 1247lbs and the Sportster is 946lbs, both hold 4 people. I do believe that the hulls are all fiberglass - no wooden stringers that I know of - others will chime in if I'm wrong.
Do a compression test (140lbs), inspect the pump impeller/wear ring, and do a sea trial.
Read here as much as you can and check out Snipes Korner:
http://www.seadooforum.com/showthread.php?t=4151;