Some recent story on the VF14:
2 weeks ago I recorded in a studio, the same studio I worked before as an in house Engineer for many years, this time I was there as a freelance hired by the artist.
The studio has a vintage U47, when I worked there it had a Nuvistor tube, the Mic had been modified long long time ago for the Nuvistor and that tube was installed.
It sounded absolutely great, and thousands of records were recorded in the last 40 years using it.
A new electronics tech started working in the studio, I’m talking about a top notch guy that is a specialist in vintage microphones.
He found a VF14M in the box in the studio's tech department, it seems they changed for the Nuvistor at some point because they were afraid the VF14 to die at some point with no replacement possible.
He sent the tube to Germany so it could tested by a guru (well known guy), the VF14M tested great, perfect in all the known parameters.
He then proceeded to install the original VF14 in the U47, making the circuit back to stock.
So it should sound much better than before now, right?
Well I know very well how the mic sounded with the Nuvistor, and even recorded 2 records in the past with this same singer using that Mic in the whole recording.
And now after the change for the VF14M it sounds much worse than before, actually it sounds crap compared to what it was with the Nuvistor.
Lesson learned, don’t trust everything you read on the internet, don’t trust internet hypes, don’t think something sounds better because it’s old or rare or doesn’t exist any-longer.
Most people that write on the internet (I’m not saying in this thread) never even ever tried a VF14M or a Nuvistor or any of the other alternatives in a U47.
There's no miracles and no magic tube, there’s sounds that you like or don’t like an you have to make that decision by yourself trying it.
I have no doubts now that the VF14 is completely overrated and no one should cry for it, just move on and use any of the available alternatives, maybe you like it even better like myself.
Now the U47 with the VF14M is unusable for this singer (and for my personal taste unusable for any singer really), so I used the U67 which sounded much better.
My 2 cents, it’s a real story