I use wavemaker in my large aquariums. The only difference I see is the method of attachment. The suction cup ones fall as the rubber cups harden. The ones with magnetic mounts stay on. The last one I got for a 75 gallon discus tank was the "FREESEA 1050 GPH Aquarium Circulation Pump Wave Maker Power Head with Magnetic Mount Suction" from Amazon. It's been working fine.
Willie