OK, that's a strange question I know, but here's what I mean: I was noticing the other day that it's impossible to get a bass to play perfectly in tune up and down the neck. No surprise there, it's an imperfect system whereby strings get stretched while fretting, etc. That's why people use things like the Buzz Feiten system (please don't derail this thread to express your praise or disdain for Buzz Feiten's system or other similar fixes, about which I have no opinion - that's not the point of this thread). So, given that you're inevitably going to be closer to perfectly in tune in some area of the neck and farther from it in another area, it seems to me that it would make sense to tune so that the area you play in the most, is closest to being perfectly in tune. For example, if you're mostly playing in the first position area, you might want to tune so that your third fret notes are spot-on, while if you are playing a lot up around frets 5-7, which I do, it would make sense to tune so that those areas are spot on - even though that means your open strings may be a little off. In other words, if you're not playing open strings much, why tune to the open strings? My question is, does anyone do this in practice? And yes, I recognized that the whole concept of intonation and tuning is considered by some to be a bit too picayune for bassists to get concerned about, something that is better left to more effete stringed instruments.