I picked-up a Shuker PJ second-hand and have nothing but praise for Jon's work - construction, finish, timbers, components and attention to detail are all superb. There's real thought in every aspect of the bass. Playability balance and ergonomics are amazing (1.45" nut and neck cloned directly from a Sadowsky Will Lee). I've had Seis, Alleva Coppolos, Fender CS and Masterbuilt,Sadowsky, Overwaters, Wals etc. and Jon's work is up there with all of them