I have both a baritone and a low g tenor. A baritone is not the equivalent of a low g tenor, so there are factors to consider that you haven't mentioned. For example, a baritone has a longer scale and a larger body. You're a guitarist, so maybe you want something bigger than a tenor. In addition, you can tune a baritone GCEA, like a tenor, but they're generally tuned DGBE, like tjhe lower four strings of a guitar. If tuned GCEA, a baritone may still have a deeper voice because of the longescale and the bigger body, and when it's tuned DGBE, it will have also a lower voice because it's tuned in a lower key. So, do you want the longer scale, bigger body and the lower voice in GCEA tuning? Do you want DGBE tuning?