Don't know if you were responding to my post, but if so--sorry, I didn't mean to imply that (that SR tuners are so accurate, no sweetened modes are needed).My understanding is that "sweetening" is about different compromises to deal w the fact the guitars (at least ones with normal frets) aren't physically capable of playing fully in tune, because of the physics involved. It's always a compromise, but there can be different approaches, and different ones have been recommended by different well respected people, to the point of having various systems built into different tuners.
However, my understanding is that many people think completely straight "unsweetened" running isn't as attractive as some other systems.
That makes me curious about this idea that the Sonic Research tuners are so much more accurate that no sweetening is needed. I don't get it.
I, personally, only "need" Feiten and normal tuning modes. I don't know how many sweetened tunings the SR tuners will store, either. And I know that the Petersons seem to make it easier to have several tunings available.
I'm not even sure that the extreme accuracy of the SR tuners isn't overkill, even for doing intonation. Lots of folks doing setups with Petersons and other tuners.
So if having lots of sweetened tunings built in is more important to you than that extra iota of perhaps-irrelevant accuracy, you might prefer other options. Since you're on a FAS forum, I assume you have access to the onboard Fractal tuner already; I don't know, maybe it's accurate enough that anything more is just a matter of features, so maybe having lots of alternate tunings on hand should be a primary requirement for another tuner.