I have to say I agree. Looks mean something to me as well and the Frankenember looks badass in a way but is not pleasing to my eyes. I'd not want it on my desk. This is no slam to those that like the look though. It's just my opinion.
Honestly to me the 6SN7 is not an upgrade over a couple of my bugle boys and vintage telefunken tubes. 6sn7 is more open, solid bass, pretty much great throughout the FR but I don't get the 3d effect and gain that I love from my other vintage 12ax, at and bh tubes.
My latest 6sn7 (1946 RCA) is one of the best tubes I have heard but I can't say it's better than a couple of my 12xx6 tubes. It's a close one though and depends on what kind of music I'm listening to at any given time and what mood I'm in.
Enjoy your Frankenember. I'd love to hear one sometime.
Which noval valves do you consider to be on par with your 1940's RCA 6SN7GT ?