I have a set of Eibach's to go on my car and will be upgrading to the Revo RV019 wheels (colour still to be decided).
I bought a set of the Sparco wheel spacers which fitted no issue and filled the arches nicely but I just didn't feel happy with them on the car if I'm honest.
I know they are common place on cars now, and the hub centric fitment allows for longer bolts to still bolt into the original hubs but I just felt a little unsafe with them. I'm not an engineer and with limited understanding if they are good/bad or indifferent I sold them on without issue.
The Mk7 does need a little more wheel in the arch though and with a subtle drop really makes them look very nice.