I have not used this product. After looking at it online, it looks like it would give you similar restults to just about any other algae scrubber or refugium set up to grow algae. It does seem on the expensive side. I didn't like the need to take it all apart to clean it and remove excess algae.
As far as getting one goes, this depends very much on your own tank, what problems you have with it, and what livestock you want to keep in the system. This needs to be evaluated on a case by case basis. I would only consider this device if your systems lighting and normal filtration is up to par.