Both acts were actually incredible in the sing off, like some of the best stuff they've produced throughout the entire show. I think based on the sing off alone, I'd save one act, whereas over the course of the series I actually have preferred the other one by quite a bit really, so it all comes down to what's more important, I guess, especially considering how close the sing off actually was. I really don't know what to do, but I guess just on my gut feeling I'm going to have to save Robbie Hance because his sing off probably just edged it in my mind, but if I was voting last I'd definitely have taken it to deadlock, which is what I hope SD's vote does, as it's too close to call for me, really. Good luck to both acts/ mentors!