Geoffkait:
Your suggestion that testing on an unfamiliar system being potentially confusing is a point I hadn't considered, and seems like a very valid concern. That IS something to think about.
With respect to the guarantee, does it cover return shipping? I ask this because the Dakiom Feedback Stabilizer guarantee states that they'll even pay for return shipping, which I think is pretty bold, and potentially risky for them. It would certainly be understandable for your guarantee NOT to cover shipping, and I think it's pretty rare for ANY company to do that, just because of the potential for unnecessary expense from people who are just "tire kickers."
Anyway, thanks again for responding to this thread. I did try to carefully qualify the question in the initial thread, particularly without having tested the product. So hopefully it wasn't offensive, as it was intended to spark discussion with some fairly tame (and maybe lame?) humor. Nothing more.