Which brand of 45 tubes do you use?

^ certainly will. A call for sure he’s not email friendly. 

I never got to try genuine NOS tubes; at best, I could get my hands on old tubes that tested strong.  Most of the brands I heard, like the National Unions, sounded very good.  They also don't cost a fortune. 

I haven't tried EML 45's, but, I have owned their similar 2a3 tubes, both meshplate and solid plate and they are quite nice sounding tubes. The meshplates are quite different from any other 2a3's I've heard--more open, with the soundstage more enveloping, and a "dramatic" sound (I've heard this tube described as "technicolor."

Larry,   Now that you mention it, It's very possible that some of (or maybe all) the NOS tubes I bought aren't but just tested within new specs. They came in factory boxes with what appears to be period correct wrapping. I was told they were NOS. Who knows. Doesn't really matter, they sound great.

The EML 2A3 tubes I have are solid plates. I never tried the Mesh plate type. Did you prefer one over the other?

I liked the meshplate even though it was a bit over the top.  I liked the wide open soundstage, but, if someone said the tube sounded "phasey," I wouldn't disagree.  I used it in a parallel single-ended amp (Audio Note Kageki) and it had a reasonable life span, although not the kind of life that vintage 2a3s seem to have if run conservatively.

Just a point that may be of interest. Philco never made a tube but they did rebranding. So when br mentions Philcos these tubes were most likely made by Sylvania.

Our company has multiple matched pairs of old stock 45s and one of the owners has over 20 years experience selling old stock vacuum tubes.

National Union is one of our more popular brands. A customer in the know described them as a very nice cross between a Tung Sol and a RCA. FYI.