Faramir, please tell us you're just being facetious when you say you can't tell the difference between the Buck and the other bodies in the high-end 1/6 market. Because, uh... there has been a world of difference. Otherwise, why else would Sideshow have gone out of their way to develop Prometheus and these other new bodies?
Honestly, I'm kind of like Cap on this one. I don't see the big deal as I'm able to get really pretty much any pose I want with the buck. I've got several medicom and a couple HT pieces and haven't been blown away by all the different poses I can get. I can get a few more than I can with the buck but nothing that makes me go OMG. With my Medicom pieces I'm always worried that I'll break the damn thing and the two HTpieces the bodies where really stiff. Same with the Takara Batman figure I got recently.
It might look something like this:
(It's a JOKE, people!!!! )