Kreg Master System would be a major upgrade from the pocket rocket purchased a few years ago for making repairs. Went on a google search for problems users experienced beyond the usual public relations postings. Found several people noticed wood slippage. While attending several wood shows were Kreg was demonstrated they had blue plastic fences to maintain wood alignment and support. Have looked for these blue plastic "spacers" but have not seen any for sale.
The Kreg system bolted to a piece of plywood with some toggle clamps could maintain alignment and increase speed. It seems that we all could save a lot of money not buying glue and parallel clamps with the Kreg Master System.
I built a few utility chests three years ago with the pocket rocket. It took a lot of work to realign the parts unless you build on an elevated table with several face clamps and an Kreg angle clamp. The work was slow and frustrating enough that I thought about returning the Kreg pocket rocket. The joints all held without slip or damage to the material. There was no need for expensive glue and no need to worry about how old the glue was. In my garage there is just no room for a large number of expensive clamps. The Kreg products save room, save space, and do joinery better. Recently deconstructed the utility chests the materia was in really good shape and saved a lot of money reusing the material.