Very tough question. Depends on what I'm in the mood for. Technical training - Jackfork at Pinnacle Mountain. Fun & flowy - Womble or LOViT. Of course it also matter on where I am. When in NW Arkansas, Slaughter Pen, Hobbs and Devil's Den.
I agree with AO, tough question. If I had to pick one, it would have to be the Womble. It has the length and flow to make an epic ride and plenty of entry points to make short out and backs. The only negative about this trail, it is not closer to me.