A while ago I played extensively a 1991 Rg550 with a dimarzio PAF in the neck and a tone zone in the bridge (the middle single coil was stock) and a 1994 rg550 Ltd completely stock, both borrowed from a friend of mine. The guitars were slightly different (the fretboard in maple for the former, in rosewood for the latter) and both advertised to have the wizard shaped neck. The 1991 was a wonderful guitar, much better than my prestige rg2620, unbeaten playability and tone. Even if the tone zone is not one of my favorite pick up. Now I haven't played yet a rg550 Genesis but if I have a chance to get one old rg550 (pre 1994) for sure I will take it