I'm kind of mixed on this generation, some of the pokemon lines are spectacular, like the ancient pokemon, the eagle, and the fire ape line, but a lot of these pokemon look terrible *cough*Dark/Fighting lizard, Garbage, Flatfish, and the Clown line*cough*. [anyone else notice the enlarged bloodvessels on the forehead of the first stage? though the final is pretty awesome]
From a [new] pokemon roster standpoint, I'd say the order would be 1 > 3 > 2 > 5 > 4 only because some of the evolutons are pretty bad (like Wotter's final stage, Gear's, and Chillarmy's) and some of the typings don't make sense (Desukan isn't Ghost/Steel? Ononokusu isn't Dragon/Steel? Clam Ninja is pure bug? Pokemon that look like knights don't have any steel typing?). Heck, most of the legendaries (like the trios) don't even look like they belong with the typing they have. On the flipside, this generation's music has quickly become either my favorite or second favorite (possibly behind Johto's), and I'm loving the plot and more urban feel of the cities.