I would call your mBox old. There's an implication in "vintage" that it has merit.
I don't think I have anything that would qualify as "vintage" as I pretty mercilessly update. I finally let go of my H3000D/SE, which people on eBay describe as "vintage", once Eventide's H3000 Factory had enough of the algorithms to make it too much of a hassle to go through the hardware. I still miss some of the algorithms, which they keep telling me we'll be beta-testing soon.
The oldest pieces of gear I have don't make sound, and are owned because they dust the shit out of anything modern for anywhere near the price. I have a Roland A-80, the biggest, scariest, nastiest, heaviest weighted 88-key controller ever made, which has polyphonic aftertouch (and which I've modded so that you don't have to break a finger to make it work). That, combined with the Arturia CS-80V, is a treat and a half. And I have a DK MSD600M, but that's only because a 600Mplusplus (one of these days we must fix the markup) is about a $6k meter while my MSD600M was $350 on eBay.
Yes, I'm still proud of that score.