Here’s a dilemma I face pretty much every day. You have your guitar set up to perfection. Perfection for you (well, for me) includes a finely balanced Floyd Rose type system. Problem is, every now and then you wanna jam along with some early Van Halen, Extreme, Yngwie Malmsteen, Jimi Hendrix, Slipknot, Meshuggah… can’t really do that unless you change your tuning, and you simply can’t lower the tuning for a few songs on a Floyd Rose, unless you use a device like the Tremolno to block the trem first, but then you can’t do any awesome whammy bar stuff. What’s the point? So you scrimp and save and buy another guitar with the intention of using that for a lower tuning. But you like the sound of it so much that you decide to keep that one in standard too. Time to start saving again… repeat every time you get into another band with a different degree of downtuning.