Maybe it's because I'm nostalgic for Unova, but gen 5 Pokemon cries were absolutely butchered in gen 6. Other gens are mostly fine, there's a couple of really bad ones (Raichu was robbed

), but for the most part they're higher quality or at least understandable changes to make the Pokemon sound more organic*, but almost all gen 5 cries were made worse. Reshiram was really screwed over, it went from a divine alien dragon to a dog.
*Except for the dragons. Most dragon types and dragonlike Pokemon, like Charizard, Salamence, Groudon, Haxorus or Zekrom had monster sounds added on top of their cries and they sound godawful.