I’ve never actually used a buffalo bar, but some of the guys at my gym prefer it because the position is easier on their shoulders.
I have used the safety squat bar, and I recommend it highly. It is a bit of a different animal than a barbell squat, but it has been my go-to squat bar while I’ve been struggling with recent shoulder drama.
I’ve also done my fair share of goblet squats, which I particularly like for people who are still figuring out their squat.
See what works for you.