I like Turtwig's evolvution Chain the most.
I like Piplup's, but Torterra is the king of awesome. You can tell just by looking, it's a giant turtle. Thos things are awesome. About the only thing that make a turtle cooler is if it were to carry and island on its back, and Oh, look! There is it! And you look at that face. That's the face of "I'm so awesome, I don't even care what you think. You aren't even worth my time, haters!" and that... Is just awesome.
Forget the fact that his physical attacks and defense are great for tanking ingeneral, but even his lower special defense is still high enough where it's easy to redeem. And while I'm at it, look at that HP! That's 95 base HP, and that's terrible. Terribly AWESOME. You and Torterra with his almighty back-mountains can easily rampage the enitre Sinnoh Reigion, leaving nothing but a barrage of KO'd Pokemon in your wake! And that. Would. Be. AWESOME.
PS. I don't like Monkeys other than the DK/Diddy combo, sorry Chimchar.