The first Rayman, Rayman 2 the great escape (which was on Nintendo 64 and was released again on 3DS), Rayman Origins and Rayman Legends are all great games, like 9/10 or 10/10. Rayman is probably the best platforming franchise after Mario and Donkey Kong.
The only cons I can think of is that the first Rayman and Rayman 3 have never been on a Nintendo console. II, Origins and Legends have obviously been.