Bugbitten,

Not quite sure who wwsp.com is but based upon the specs the guts of the 7500 are the same as the ATI 2005. Even the manuals of the amps are pretty much the same. The only difference (besides the face plate) that I have observed is the 7500 channels are evenly spaced in the chassis while the 2005 are not. ATI offers to add channels to the 2000 series (up to 7 of course) for the $300 each. So I guess the 7700 and 2007 would be the same. As far as the price, bricks and mortar add a lot of cost.