Whoa... the new sprites...
Best/ones I like:
Grotle -- I'mma gonna HEADBUTT U!! NooB!
Infernape -- Looks like it's ready to fight
Bidoof -- I LUF DA NEW BIDOOF! It's head is like, an AWWW pose
Gyarados -- SO SWEET! Looks sooooo much better than the coiled up stuff
Vespiquen -- Violent?
Buizel -- Looks like it's actually gonna attack, not just stand there.
CHATOT (through) RAICHU -- EVERYTHING CUTE!! GWAA!!
Riolu (through) Quagsire -- 'nuff said, everything works well.
Snover (through) Weavile -- Everything looks menacing, even the basic stages.
All the legendaries look like they had time put into them
Gallade and Gardevior -- Just look at them!
All eveelutions (minus g/s) -- see above
Porygon Evo-chain -- perfectly done, smooth and good poses.
Scizor -- Good proportions, much better than D/P
Now the bad sprites
Piplup line: just looks... odd...
Luxray: Killed the pose....
Machamp: WHAT!??!
All Ghost types (minus Spiritomb) They look too flat, but solid... not ghostly at all.
Seaking: FANGS!?!? WHAT THE HECK!?!
Sudowoodo: I never liked the sprite, since 3rd gen.
Munchlax: BAD!! BAAAAD!!
Marrill line: killed them. They're too small, too bland
Espeon and Umbreon: Too small, bad poses
Okay, that's enough. Too much stuff to comment on....