What type of power heads/ flow do you use / like

Gathering equipment to set up my 20 inch cube and wondering about water flow. Obviously I want enough flow and the right flow to eliminate any dead spots, but I also want the tank to look as natural as possible with as little visible equipment as possible. On a budget as well, I don't plan on putting $300+ into power heads. Was thinking about a gyre, what do you like?
 
A pair of Tunze 6040's on the back wall with the deflectors will give you a good amount of flow. You can sneak them down behind your rock work and the deflectors will point the flow upward a little.
 
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