Great jig at a fair price
I'll preface this review by saying that I had been shopping for a concealed hinge jig for a while and had primarily been considering what Rockler offers, but, their Jig It products for this application start at $69. So, when Kreg introduced this jig, I had to give it a shot due to the cost.
Having just used this on an entire kitchen's worth of cabinet doors, I can comfortably say that this jig is a good buy overall. Sure, you have to move clamps and switch bits for every hinge that you bore, but, that's alright once you get into a rhythm. My only complaint about the product is that the accuracy of the 1/16" pilot holes for the hinge screw connection is just so-so. You end up having to hold the hinge down when you install it to make sure it doesn't end up crooked. A minor inconvenience. Also, I'm not 100% enthusiastic about the all plastic construction and how long it'll last, but, so far so good.
One tip: if you're lucky enough to have two drills, it will save you from having to switch between the forstner bit and the 1/16" bit.