John, check this out...HTS2600/HTS3600
There's a $150 price difference between the 2600 and the 3600, compare the joules rating
of the two units...the 2600 has better surge protection.
It's not necessarily MonsterPower, for the most part it's MonsterCables ... they are good cables but they are tremendously overpriced. The folks at Monster apparently did some marketing snake oil tactics at this years CES show and in my estimation that wasn't too cool.
The Belkin units are very nice, I almost bought one myself. It basically comes down to what unit appeals to you the most, like anything else!