The handmade, handheld router jigs that compensate for the curved top and back have way too much "pucker factor" for me, so I'm looking at various machines. The Fleishman style machines and their variations with the parallelogram arm and drawer slide mechanism mounted on a 'Lazy Susan' type table that lets the guitar body stay in a fixed place while the router is moved around the guitar don't do it for me either. It just looks like there are too many joints and bearing surfaces that can introduce errors - especially after it gets some wear on it. So, I'm looking at the LMI and Stewmac machines. Does anyone here own either of those, or have firsthand knowledge about how well they work? If you have a Fleishman machine, I'd be interested from hearing from you also. I'd be happy to go that route if I was confident in it's performance.