Sandile, Krokorok, and Krookodile are my favorite for 5th generation, one of my favorites over all.
I like Reptiles for one, Crocodiles being one of my favorite Reptiles.
They were also very useful in-game for me.
They look awesome.
Nothing to dislike for me.
I have lots of favorites though, Joltik, Galvantula, Yamask, Cofagrigus, Zekrom, Larvesta, Volcarona, Kyurem, Zorua, Zoroark, Genesect, more and more and more.
3DS Friend Code: 3153-4608-8374
Friend Safari: Steel(Ferroseed, Forretress, and Bronzong)