Which one is better in your opinion?
I believe you mean shift.
Like always, there isn’t necessarily a better yoyo. It comes down to preference. I own a 2016 superstar and would highly recommend it (as do many other people on the forum). I haven’t played the shift but I have heard a lot of good about it as well. It’s going to come down to preference: size, shape, and so on.
Yes, it does all come down to preference. Very true.
So buy a Shift.
Smooth! That was subtle 
I’m looking at getting one, just FYI