I have four teles, all with single coils (three different brands), and one humbucker-equipped guitar. On the teles, I have 3, 4, and 5-way switches. I find that I spend most of my time in the middle position (both pickups in parallel), whichever guitar I play. And I'm not a pedal guy, so things like fuzz, chorus, delay, etc. don't factor into it for me. I would say my favorite positions in terms of usage are middle, neck and bridge, in that order.