Looks like the Procomp has simply been rebadged as the X10 Parallel Pro.
the problem the Pro Comp has was performance price ratio. For half the price, you could buy competitors’ 4mm carbon shafts, or (in Europe) Skylon Paragons, which are as skinny as X10s and shoot amazing. The only people i know who shot Pro Comps are people who shoot on school sports fields where they must use aluminium carbons to help metal detectors find lost arrows. 95% of everyone else shot either VAPs or Paragon/Preminens. Preminens with tungsten points are the same price as Pro Comps with steel points And the Skylon shoot unbelievably well. I think they had to get ‘X10’ in there to elevate the arrows to help them sell. Mid range offerings always suffer when people fear they’re missing out over a ‘top of the range’ arrow like the X10. Me? I shoot 3.2mm Paragons with tungsten points and could not ask for a better shafts. They’re actually slightly slimmer than x10s and tough as hell - far tougher than aluminium carbons.