I'm no fan of Monster, but their amps are pretty beefy. Have you compared the weight of those to others with "similar" specs.
MPA2250
250x2, 20-20,000, 8 ohms .01THD
400x2, 20-20,000, 4 ohms .01THD
75 lbs
Rotel RB1080
200x2, 20-20,000, 8 ohms .03THD
?? at 4 ohms
37 lbs
Now the outlaw 7700 seems to represent a good value, but keep in mind at 93lbs, its sharing 7 channels instead of two, as well as a common heat sink. I'm not a huge fan of 3 ,5 and 7 channel amps, but I'm willing to bet this one probably delivers nicely.
200x7, 20-20,000, 8 ohms .03THD
300x7, 20-20,000, 4 ohms .03THD
Is anyone familiar with the Bose 1801 amplifier from yesteryear? It was one of the highlights of Bose before marketing took over. It was massive.