I am on the BIAS website right now... I have never tried one. They do look comfy.
I just strung the tableclothfactory caveman special and the Yukon Hammock. TCF wins by a lot, so far, but I will try the yukon again after I switch out the stretchy thumb sized ropes and s-hooks for something proper. I guess it fairly normal to have 7 hammocks hung in your yard at once...