The porter cable jig is frustrating to use and requires the workpiece to be held vertically which limits the length of board you can use with it.

The pantorouter is so much faster when cutting m&ts and so much more versatile than any other tool in its' price bracket I think it's an incredible value even at $1000. Heck the only thing that really comes close is the Leigh D4r which runs 600 bucks and doesn't allow nearly the variety of cuts the pantorouter allows.

The best part of the pantorouter is that you can think up a crazy joint (I've cut an 'S' shaped through m&t), cut it out on the bandsaw, do minimal cleanup, and because of the 2:1 reduction it comes out silky smooth on the finished piece.