What PWC to choose please?!?

My dad just recently bought a new boat and we have our little boat ramp thing that we put or dinghy on before but we don't need it anymore because it fits behind our new boat. So now we have the floating dock and we can put a jet ski on it. There are two we are stuck on. The first is a 1994 WAVERUNNER YAMAHA GP and the other is a 2000 Sea Doo Bombardier Jet ski wave runner. Are these any good? I don't know anything about jet skis so some information would help. Thanks!!!