This is great to hear. It's too easy for people to b**ch about a product, but harder to remember you're happy and give kudos. I tend to buy from those types - over and over.
I've heard similar stories not only for direct buyers of SVS, but those who purchase products on the secondary. It's too easy for a company to say "we have no idea what happened to the product to cause it to do this, it's out of warranty, so good luck!"
If they believe in their product, then they'll back it up whether you're the first or the third owner. I can't think of a better reason to go back to those people when I'm ready to spend some serious cash, or recommend a product to somebody else. A smart business has figured that out. And, it's another reason SVS is on my short list if I ever have need of a product they offer. Glad you've got it sorted out!