I used to use a guitar ME-50, it had an onboard tuner. On most of bases, it was wildly erratic, not pitch wise, but it certainly took an act of congress to get it to hit and stay on the center mark for any given note. I switched to a Korg DTR2 toneworks, I run it out of the tuner output of one my amps, no effects before it. Even just direct into the tuner...its even worse. It takes a month of sundays for it to grab the note and I can either get it fundamentally center with just a flicker sharp or flat, but never just solid right in the center. This applies to both drop tunings and standard E. I have 5 basses, all are setup well and intonation is correct. I can grab the octave and it holds a little more still but not as still as Id like it. Ive resolved to just taking an average. It pitches out against software tuners and a variety of little battery powered tuners, guitars, keyboards just fine. Am I just expecting too much out of a tuner and/or are the tuners geared towards tuning guitars and too sensitive for basses?