I never said or felt it sounds at all bad in a bad mix, rather the opposite. I think it sounds very good in a band mix, but there are some exceptional older speakers I’ve got that to me honesty make V30’s obsolete and comparatively uninspiring sounding. Sometimes it may take more work than a V30 to mix well since a v30 just naturally works so well, but imo well worth the extra effort to get exceptional level tones
Of course, with producers today they can make those V30’s sound great. For my friend’s re-amp 2 years ago we used a cab of mine with v30’s. It sounded very good, but not amazing, but after the producer he used worked on it, it sounded killer. He used an SM57 as well. So yes I’m not disagreeing with you, but with my friend’s last re-amp session a few months ago we used all the best gear I had then (it’s even better now) and the raw tones he got totally humiliate what we had in that older setup and I’m sure once the producer gets a hold of it, it’ll sound amazing. This producer he’s using he said worked on Radiohead and many other famous bands. I myself am a nobody and know very little about recording, won’t make any strong opinions on that, but my friend is a very talented musician and likes to have me dial in and bring my gear for his stuff and I enjoy the process
In a nutshell I feel (just my opinion) V30’s will be like an 8-9/10, sits well, not as much tweaking necessary, but imo it’s worth the extra money and effort to get closer to that 10/10 level tone. Everything in life from my experience needs more than twice the cost and/or time to squeeze out that last few percent to get to that truly top level like with a iic+ vs the next best alternatives or rev c/d Recto’s vs later ones, a real Klon, real Dumble, etc. To me this is where the real magic or “it” factor happens and the thing that got me hooked on gear and tone. Many think I’m nuts and maybe I am, but so be it