Eyyy....
I like most of the new evos.
Here are my opinions.
Magmortar looks much better than Magmar.
Yanmega just looks like a crazy bug which will eat your head off if you poke it.
Gliscor has a great sprite in Platinum (not the one from D/P, that one sucked). It also has cute eyes.
Tangrowth and Lickilicky are just plain cute.
Mismagius is cool.
Mamoswine was a welcome look change for Piloswine imho.
Porygon-Z looks a lot better than Porygon 2.
Ambipom looks silly, but I love it as a Pokemon.
Froslass is good, but I like Glalie better.
Weavile is okay, but the back-sprite sucks.
Electivire is okay.
Rhyperior is okay, but Rhydon looks better. It's also terribly colored and the Platinum sprite sucks.
Dusknoir is too fat and doesn't look like its pre-evo.
Magnezone and Honchkrow could be better, though I respect them both as great Pokemon.
Probopass... Just shoot me now.
Togekiss looks like an idiot.
Gallade is one of my least favorite. Stupid Pokemon.