Back in the early 90's Donkey Kong got a major reboot. He went from saving his grandpa to getting his banana's back. Then he got Kongnapped... twice.
DKC Pros: Outstanding visuals (for the time), Super jump move is great, The music is a thing of beauty, Fantastic level designs, Great challenge, Excellent sense of charm.
DKC Cons (Kons): Finding all the bonus rooms does nothing to enhance the gameplay, The bosses are kind of weak.
DKC2 Pros: All the stuff you love about the first game is back, Dixie Kong is a great addition, New moves, New animal buddies, An even better soundtrack that I consider one of the best soundtracks ever made for games, New items to collect that serve a purpose.
DKC2 Kons: Nothing but nitpicks so who cares?
DKC3 Pros: A majority of the stuff you love from DKC and DKC2 are back, Great level designs, great sense of challenge, The bosses are a little harder this time.
DKC3 Kons: The soundtrack is not memorable as the first 2,The charm is not there, The Bear Brothers felt unnecessary.