Just beat Whitney on Crystal. Current team, all levels 15-17:
Leaf (Chikorita, soon to be Bayleef)
The main intent here is to use Pokemon I haven't before (I've only used Meganium and Poliwrath, but I haven't used the latter in a long time). My PLANNED team is supposed to be Meganium, Poliwrath, Arcanine, Sneasel, Nidoqueen, and Skarmory. But we'll see how Tunnerre, Phantom, and Ghosty turn out... but I still want my Sneasel!