I have one and its great.
They were exceptionally helpful though the whole process. I had them install it and its fits perfectly. They really took the time to engineer this thing properly. There is maybe 1mm of clearance between the main hoop and the headliner.
The car is significantly stiffer as well. I find my self lifting a wheel when I enter steep driveways often
The only thing I had trouble with was fitting 4 wheels/tires in my car with it in. I have found that I had to remove my backseats in order to carry wheels to the track. Doesn't bother me at all but I know some people out there are buying it because they plan to put the xbrace in and out and actually use the backseat...
overall great people and a great product. feel free to pm me if you have any questions about it or them.