Wave Machine?

I'm going with 2 vortech mp40w's on my 75. Here's a video of one mp40w on a 90, you can see the height of the wave in the beginning. (I'm not sure how to fancy link the video inline )
YouTube - EcoTech Marine VorTech Pump

If you're just going with a single powerhead with the vortech you don't need an external controller to do waves or controllable flow patterns. Although I think you can get a tunze 6105 (comparable flow gph-wise) and the single controller for about the same price as an mp40w, or the tunze might come out slightly ahead depending on where you get it.

I'm a big fan of the vortech's reef crest mode though, very random flow for one powerhead and such a small footprint in the tank, plus no added heat and all the electricity is outside the tank.

That's pretty much my reasoning anyway. YMMV!

 

no lol with my tank size now it would flood my room