Here's my weak rationalization: I generally didn't have more than one at a time, it was over an 8 year period (2003-2011), I'm in the recording business, and yeah, I'm nuts.
Fantastic amps, no question about it. At the same time, as with any instruments, it's a question of fit. What most suits your playing style? How do the tones match up with what you want to hear? What works with your guitars?
So back to the topic of the thread:
Was I surprised after being a TR and Mesa guy that the HX/DA turned out to be the best fit for what I do? Absolutely.
I liked the clips of the amp on the PRS product site, but who knows what's going to happen once you get the amp in your own space and start working with it? I hadn't actually played one, and there wasn't one nearby to test. Still, I couldn't get the tones in the clips out of my head. So I called my son who's working in the biz in LA, and is a fantastic player, and said, "Please go to the PRS site, check out this amp, and tell me if you're hearing what I'm hearing."
He texted me back two words a few minutes later: "Get one."
When it arrived, I just couldn't believe how good it was for what I do. I can't think of a thing I'd want to change on this amp. I have no reservations about having it as my only amp in the studio. In fact, I worry about not having a backup in a vault somewhere!