I like mine a lot. My tank dimensions are 48Lx24Wx30T and I am easily able to remove all other pumps from the display and replace with this one. I have it at 40% forward and 50% reverse, it switches every 5 minutes. When I feed I shut it off for 4 minutes, and when the Gyre turns back on you can watch the food particles gyre around the display. Pretty cool. I have mine mounted horizontally, but it can also be mounted perpendicularly which creates a gyre in the different direction.
I did try to swap out one of the rotors with one of the supplied backup rotors, this can create a different flow pattern. It was confusing and I never got it right so I returned it back to stock. I think if I tired again I could get it figured out.
Lastly, even at 40% the pump is louder than I expected. There is apparently a break in period, but I'm still waiting for that to happen. I wouldn't say it was louder or quieter than the Jeabo WP40 I was running....but the difference in flow between the 2 is night and day. Overall I'd give it 5 out of 5 stars!