Feels good breathing life into old threads, hmm?
And as for the topic itself: Chikorita. Every. Single. Time. (Nidoran and Diancie come in a close second and third, respectively. I judge Pokemon based on their cuteness.)
252 Atk Charizard Flare Blitz vs. 4 HP / 252 Def Garbodor: 132-156 (43.7 - 51.6%) -- 6.6% chance to 2HKO
252 Atk Garbodor Acid Downpour (190 BP) vs. 0 HP / 4 Def Charizard: 306-360 (103 - 121.2%) -- guaranteed OHKO
3DS Friend Code: 0146-9642-4178