I've been pondering this for a long time. For a number of years I played in standard/drop D, then I switched to Drop C for a band, then I bought a baritone which allowed me to mess around in drop A, A#, and even get to subterranean G# territory (and admittedly jumped on the Djent bandwagon for a short period of time). I wish I could have a more simple mind when it comes to this stuff, but I love swapping different tunings because sometimes it just helps with inspiration. However it is tough on my guitars to constantly do this and adjust the truss rod etc. I'm wondering, how often do you guys switch tunings on the same guitar? Or do you have a specific guitar for each tuning that you never change? It's fascinating to me that bands like August Burns Red and ERRA can seem to record every record in the same exact tunings. Whereas it seems like other bands like Periphery jump all over the place with tunings. Would be interested to hear others' thoughts.