For me tone is the only thing that matters to me with all categories (guitars, amps, pedals, etc). I always found it so laughable and stupid how most guitar reviews on YouTube will have a 20-30 minute review and talk about sound for maybe 30 seconds, while the rest of the video will talk about playability, build quality, other details, but sound apparently isn’t that important to them, but anyway I digress
I’m open minded to all categories and think there’s noteworthy stuff in them all, but at least the 99% of the time the boutique stuff doesn’t live up. The ones that have seem to be stuff that was boutique for over 3 decades like Jim Kelley and Dumble. I’ve owned over 100 amps (played countless others) and for me the only ones that have stayed (or are staying) are all over 20 years old except for 3: Gjika, Wizard MTL and Cameron CCV. The Gjika is a real exception and one of the top 3 best amps I’ve ever played but not a metal amp. I’ve given all amps their fair chance whether they’re made overseas, solid state, hybrid, ptp vs pcb, etc and except for a few, I find the older amps to sound best and most inspiring. Most others come off neutered and sterile in comparison
Actually now that I think about it, all my keeper amps are PTP except for my Boogies, Marshall’s, Blueface and CCV, so maybe there is something to it. The few amps left on my radar are also PTP (Plexi, Larry, Schroeder, Naylor, Dumble, Trainwreck)