Hey Ray, thanks for the thoughts. I hope that there is an audible difference between the two speakers... Otherwise it's going to be hard for Axiom to sell them!
I realize across the majority of the frequency range they're going to be similar, but the extension at low frequencies for the 800 looks quite a bit better based on the initial plots that have been released.
Also, with the current owner's club discount the difference in price is < $50, so I think it'd be worth it to give the 800 a spin.
Jason