>>24791795Kanto - solid region all around, no general theme and not too linear.
Johto - decent region, but very divisive. Some people love its rural theme but just as many hate it for its caves. Non-linear, which is always a plus and makes backtracking easier before you get fly HM.
Hoenn - even more divisive than Johto, and with good reason. If you dislike water routes (like me), you will probably dislike Hoenn. The beauty of some of the land areas are a mitigating factor.
Sinnoh - Just shit all around. I hated Mt. Coronet and whatever that goddamn flower route was. Some of the music was nice I guess, but all around just a shitty region and shitty lore.
Unova - linear as fuck. Castelia may look cool, but it is actually very devoid of content given its size and makes finding anything worthwhile a daunting task. The placement of the desert makes very little sense in the otherwise temperate region. Good games, but I did not like Unova.
Kalos - Decent lore, but otherwise kind of vanilla. Wish they had really shooken things up rather than give us yet another temperate region. Lumiose city also suffers from the same problems as Castelia but is x10 worse. Don't even get me started on the power outage.