zax123, I am happy with the sound of the upgrade. Blown away is such a subjective term, I don't know if I would use that...The thing for me is that this is more expensive than any other stereo upgrade I've ever performed or paid to have someone do on a car...I thought about doing something myself, but don't have a service manual or know much about the existing wiring, etc., and wasn't interested in doing exploratory surgery. Then I thought about taking the car to a local shop that might be cheaper. While they may do fine work, I was just reluctant to have someone tear into the car that might not know that much about it.
I ultimately chose Reus because of the fact that they have upgraded many different cars over several years, including many Model S's. As I saw when I took my car in to be upgraded, a good portion of the cost of the upgrade is paying for their knowledge and experience. Good car stereo equipment isn't really that expensive, and Reus doesn't appear to use "name brands" (I didn't see the drivers, but the amps not not marked with a brand). However, since sound performance is really what we're looking for, the brand doesn't matter. Reus has done the research, they have chosen the components to use, know exactly which trim panels to remove, which wires to tap in the car, and how to do the upgrade while minimizing the invasiveness, etc. You're not going to end up with anything broken or any rattles after they get done. And, that, in my opinion, is what you're paying Reus for with this upgrade. Along with improved sound, of course
So, yes, I am happy with the upgrade; it sounds good. I wish it was less expensive, but I believe you get what you pay for...
I hope that answers your questions...