the seadoo gtx( i think thats the name) are pretty reliable. they are 2 cyl. easy on fuel too. kawasaki zxi's and stx's are reliable but the triples tend to eat up the gas. those are the 90's skis ive been around the most. i'm partial to kaw but my dad has a 98 seadoo gtx and it spanks my 900 speed wise. go figure.