I have a couple of different Kreg sets. I am currently using the older version of the Kreg Master because of the clamping speed. If you wanted to make a trip up north, I'd be glad to lend you a jig, a bit, and the clamp you are looking at to try out before you buy them. You could also see an assortment of projects in various states of completion that feature the Kreg.

My big advise is to use a corded drill to cut the pockets, and a battery drill with an adjustable clutch to drive the screws. Particularly in ply, you don't want to overdrive the screw. You will either crush the ply or spin out the hole and lose bite.