sicce voyager stream

I need to pick powerheads for my 40B setup, preferably 2 for now & 2 more in future for varied flow patterns. Tank will be SPS dominant and return pump is I believe 650gph if that affects your input. I am curious if anyone has any experience with any of the following: Hydor Koralia Evolution...

I got these recently from a LFS going out of business last summer. I did not put them in my tank until early Fall last year. These are work horses that will last a LONG time. They retail for almost $200 each. I am selling for $150 shipped (CONUS) (selling local for $125 if picked up and...