FunkyJohn's is very... dark. And needs a border. Sonic is fusioned (literally) with the background in some points, and I'm not talking in a positive way. But I kinda like it. Way too big.
Spikey's is better IMO, but that texture isn't nice. And the render should be more important. I don't like that type of border, either. But it's better.
Good luck! If you want some other GFX Battle, I'll be here. :)