Who is still loving an older ARC preamp or amp?

[guitardave]

I saw an ad looking for an arc ref2 mk2 (nothing else) which got me thinking... as a guy who chases the latest new arc preamp release I so appreciate a wanted ad like this. I owned one of these many years ago, and that was the preamp that started my arc continual chase, with the subsequent ref3, ,5, 5se, and now 6. And I have appreciated each upgrade. But I have had the experience more than once of listening to a component that I “upgraded “ from and been stunned that it still sounded simply excellent, and wondering if the multiple upgrades and many thousands of dollars had got me any more satisfaction or pleasure. More detail, yes, but more pleasure or satisfaction? Hmmm
So this has me wondering, anyone who just loves their sp10 or whatever and has not been tempted to change it?