What's your current guitar, and what is the bridge on it? I ask because all my guitars are hard tail. We do about 6 songs a night with Drop D, and we also change songs very quickly, and often call an audible, so I need to be ready at a moments notice. I use the Hipshot Xtender. I have them an all of my guitars. I won't gig without it. You do have to drill one small hole to mount it, as long as your guitar handles modern sized tuners. Otherwise you may also have to ream out the peg hole a little. If that's not your thing, then a second guitar would be a better option. I'm the kind of guy that makes all of my guitars road/gig worthy regardless of age and vintage status, but others like to keep their guitars as stock as possible. There are a few small tricks to setting them up and using them, but once you get the hang of it, you can switch the pitch of your E string very quickly and quite accurately. Plus it's a lot faster than changing guitars. I've even changed it mid-song.