Wavemakers, waveboxes, powerheads? UGH, how do you make a choice?

[Chaloupa]

I think I am leaning towards a wavebox WITH a couple of extra powerheads (Tunze)...BUT...I have a sand bed....(now I wish in a way I didn't but I do like the look of sand) I am hoping I don't have a constant sand storm! I have been offered a wavebox by a very kindly reefer to try out on my tank to see if I even like it! (how nice is THAT?) so may do that and see how it goes... I don't mind spending the money ONCE........but not over and over!