Looks like it has more control then the old one.
I wonder if the new controller would work with the old style gyres? I have two and it bugs me because they go out of sink all the time!
Yes the new controller will run the old gyres too.
Just got mine in today. I got the 250 model and hooked it up with my old 150 model. So far I like it, but the controller directions are bit sketchy. I have yet been able to find the 2 preset modes. Overall the 250 model appears to be a bit more "stout" than the 150 model.