sweet guitar! Have you used the 510s? The 918e I played had the 21:1 510s on it. While silky smooth just took FOREVER to tune the guitar up a half step( they had it tuned down a half) felt like all I was doing was cranking and getting nowhere fast. I had thought about it for my 816CE but now after actually using them-- NOPE thestock tuners are just fine and I save money. If a person was playing and doing down tunes on low E in a middle of a song forget using the 510s with 21:1. just not quick enough.