Most improved pokemon sprite

Remember back in Generation 1 when you looked at some of the sprites and were like WTF?
Now with all of the improvements in the games all sprites are clear and detailed. So what I want to know is whose sprite is most improved.

For me it is Moltres take a look at that ridiculous sprite. It looks nothing like it does now.

http://www.nes-snes-sprites.com/PokemonRedBlue.html. Here is a link for reference.