Chris-
This questions is probably best asked in a more neutral discussion forum as we are obviously biased here. However, the advantages to our pump are no heat in the water (you'd be surprised how much a large submersible powerhead will actually heat the tank), much smaller in-tank footprint which preserves the beauty of your aquarium, and more controlability out of the box. Lastly, with our pumps you have the ability to run a standing wave or use the pumps for randomized flow through our wireless wave driver. Other devices on the market are either oriented toward making waves or creating laminar currents, not both. As a result of this functionality, our pumps end up costing less than other products because you only need to buy two pumps and you've got everything you need.
-Tim