How in depth do you want it?
A simple kick down the field game, or do you want the actual game, with penalties, corner kicks, flags, etc.?
How much detail do you want?
-Sorry dbl post-
Half-Kaizers! They're all I use now... but I'm getting tired of making my own tilesets... I wish there were more HK resources.
I like HK, they are purdy.
RTP. The other two look strange (I've always hated the kaizer/half-kaizer look), plus RTP sprites look more like traditional 2D RPG Sprites.
RTP for me.