RE: Simplicity?
I can draw a 73 lb Outback as easily as I can draw back a 67lb FX. In the one case I get 73ft/lbs of KE on the later I get 61. With the longer risers of the parallel limbed bows I get a compact package for manueverabilty, while maintaining the stability characteristics of a longer bow. I get a bow that is way more quiet than anything I've experienced before.
I think that if a fella upgrades every year the changes are subtle and don't seem like much. But for a guy(like me) who changes every 5 years or so the differences are profound.