Resun 1500 wave makers is the ones i use and there really good flow rate goes from 2000lph to 8000lph and then to 15000lph, comes with its own controller i paid £50(uk pounds)
I use and like the korilia power heads because they are cheap to buy and have been working in my tanks over 1 year now. I use 2 seio 2600 for max flow in my 220 gal. I must say i agree the Tunze is a very nice unit with tones of flow....just kinda expensive.