Now that I have the money, and that I am switched over to bass, I want to have a nice rack (at least head & tuner). On guitar, my rack fx had tuners built in, but they cant tune basses, and there's no chance I am taking that rack just to tune. I am used to "set and forget" because of a floyd rose bridge also, so I am not a regualar tuner. Is a Korg DTR rack tuner good? Which IS BEST? Does it just stay on while you play?