Mmm, I sure like a lot of them, to be honest. The only region that sits uncomfortably at all with me is Sinnoh. The last couple years, my favorite has been Unova--the characters are really fleshed out, and the region pays a good homage to what it's representing in our world. Especially with the additions made in B2W2! I loved that California was added (i laughed so hard at the city so inconspicuously named Virbank,) and the Southwest. I'm sure if I was from Japan, I'd understand the Japanese regions' references to the regions of Japan a lot better, and would appreciate them more, but alas. ): Johto also has a special place in my heart, even with how congested the whole region is... poor Johto didn't age too well, but I still love it to bits.