Well, I try not to get too nutty about descriptions of the way things sound.
I will say that the L251 is a sound that we have been lacking in our mic closet.
We have a lot of ribbons and other dynamics and not too many condensers... certainly not any "bright" condensers.
It's an instantly recognizeable texture when it hits upon the right voice.
That tells me that Lawson hit the mark pretty nicely with it.
We were hoping to get that sound with the Peluso P12, but it fell very short for us. Too much drama in the upper spectrum. It's supposed to have a little sparkle.. "a little spakle" turned into looking directly into the sun pretty quick.
I've only used the L47 on the FET body so far, as a room mic. I think that it's going to be used more than the U87. The 87 feels cold compared to it.
I'll be swapping heads next time and trying them on some more sources.
Oh, I've only used them with API 3124 so far.