essentially any direct drive extruder is what you want... you do NOT want a bowden extruder...

My top right now (im evaluating as well)

1. Taz 4-5
2. Printrbot Metal Plus
3. FlashForge Creator Pro


For what you want, if size of the bed isnt a big deal, i am a BIG fan of the flashforge creator pro.. I own one and its amazing...