Where's our best YA publishers? Link?

Hi, guys. I'm having trouble finding publishers who accept YA genre fiction. I know most of the major imprints that accept it, but I'm also looking medium-sized indies, or even good small press POD. I know that children's and MG is often lumped together with YA, but I'm just having a problem finding solid publishers of this genre. Any links to market listings that I could use? Where can I find a good list? E-pub/print would be acceptable.

Thanks,

Tri