Rollmaster and JP are the same. JP bought Rollmaster out some time ago. Have you looked at the Comp set? It's very beefy. Not a double roller, but it's badass.
and your talkin about CCA-3205? double link with no adjustment... only reason to upgrade is for the roller and adjustable, the double is overkill. ive never gotten more than 6K miles out of a new stock set...