I have a pair of original VR-4s that I bought new about 30 years ago. I've emailed Matt at various times with questions regarding replacement drivers, etc. I had a midrange go bad. Very responsive. Like a dumbass, I burnt a hole in the grill cloth when soldering the driver connection. They were able to have a new set of covers made and sold them to me at a reasonable price. I'm saving those speakers for my son.
I bought a new pair of Endeavor RE / Model One. They kept me posted on the fabrication process, break in time, and shipping. At one point I had asked a question about speaker wire and I ended up getting a call from Damon Von Schweikert and Leif Swanson. I probably talked to them for 30 minutes about wires.
Excellent service and I'm very happy with my speakers.