I use all the positions, having tone control over the bridge and middle positions is critical. Two of my Strats have a master tone and a mid boost (the MIJ 60s has EMGs @18v with SPC, while the Sadowsky has switchable mid and gain boosts), the 57 has one tone knob wired to the neck and the other to the other two pickups. My MXG superstrat with Tom Andersons has a master tone.