I would try to find a 99 or later 750 Monster. Anything earlier than 99 had issues with the head studs and the stator nut. Also when you buy one replace the timing belts, the belts are like $70 and it takes about 45 minutes to install but they need to be replaced every 2 years or 12,000 miles.
Oh by the way I ride a 2001 Ducati Monster 900Sie