I have two 280 gyres for my 240 gallon.. Absolutely love them. I'm running alternating gyre with forward at 20 percent and reverse at 40 percent which is the most my fish will handle without hiding in the rockwork to keep out of the current. It moves practically all the water and I almost have zero dead spots. Very happy customer here..
Maxspect is a great product but in my opinion, nothing moves water like the gyres.
With the exception of one aqueon powerhead to keep a constant flow behind my rock work, the gyres are all I have in my tank