Climbing, kayaking, reading, music-listening, watching MLP (Betcha couldn't have guessed that!), drinking tea and reading webcomics (XKCD, QC, C&H, most of the Freshepics collection, Lackadaisy and probably a few others)
I would say the one near Ponyville. I put my DDog there, and there's another one living there as well. It will make it easier for you to involve him in more RPs if he's near where the others are. Not impossible, mind, but easier.
