Ripto's Rage was kind of mediocre. I am looking forward to what the other two have to offer.
Ripto's Rage was the first playstation game I ever played, so I probably look at it through the nostalgia lens a bit. I loved Year of the Dragon almost as much as Ripto's Rage. The first game was the one that I felt wasn't too great, though that was mainly because I found Spyro's voice to be unbelievably grating.