Plenty of milk boxes still available.Enjoy the compressor hunt! You never know what will happen to a specific pedal. I've had some pedals by well-respected brands just randomly stop working for all sorts of (usually simple-to-fix) reasons. But your experience is often why I try some cheap/affordable clones - as a way to test what I may or may not like. If I like it, I usually go down the rabbit hole to find my favorite version of that tone. Sometimes, the cheap clone is better than many boutique versions, like how I prefer the Arion Metal Master over many more expensive HM-2 clones.
My favorite compressor is the old DOD Milkbox. I really wish somebody would clone that, or that I could build pedals myself. I know there's a schematic and PCB available. And now that I just looked, of course components are no longer available for it...
On your other point, I've had many experiences with "boutique" builders sending me stuff that either doesn't work right out of the box or breaks in a day or two. I will not name names, but if I just had the money back that I spend in shipping I'd be happy.
I have several Demonfx pedals and love every one of them. I play in my living room so I don't worry too much about sturdiness. But so far so good. They all work as advertised and sound amazing. Especially the darkglass clones.