Ahh, that's why I'm asking. If you go to the 755 product page, Gallery, it's really tough to tell if they are the same size or not (the left one *might* be bigger)...
OK, I found one number in the http://www.hometheatersound.com/equipment/outlaw_755.htm review from the other thread: "22,600 microfarads of capacitance per channel".
Hmm, the "other" amp I'm looking at is (only) 46,000 uF total, and weighs about 50 lbs. (The 755 is 80 lbs...) Wow. More is better, right? Hee, hee. 
[This message has been edited by Kevin C Brown (edited November 22, 2002).]