You just walked into a southbend only crowd..
There are some very good clutches available to you, southbend is not the only one, from what you read it is a good one though.
Valair has started to develop a following with their clutches.
I chose not to tuck my head in behind everyone else and follow the herd... I chose to go with a company called SPEC. So far I am enjoying the heck out of my dual disc from them. It is capable of holding over 1900ft/lbs, not that I plan to give her that much. After about 500 miles it started to quiet down when warm, no after about 2g's on it after the truck has warmed you can't even hardly notice the chatter while sitting at a stop. It is a little grabby while backing my boat, but as soon as the pedal is released it is smooth again.
Ultimately it is up to you how much money you wanna spend.
Eddy

eelout