Difference between mesh vs. solid plate 300B?

After a few months, I finally found the answer to my own question on someone's blog. Link here: http://robertmusic.blogspot.com/2010/06/emission-labs-eml-5z3-revelation.html

"Now, first a word about mesh plates. There are some very shady marketers calling any plate with a hole in it a 'mesh' plate - such as the Sophia, Full Music, and TJ brands. This is complete bullshit. NONE of these are mesh plates. They are solid plate tubes with a bunch of holes punched in them. That is just plain false - mesh plate tubes have exactly that - a true wire mesh woven as the plates. Nobody but Emission Labs has done that incredibly difficult manufacturing process since the mid 1930's.

A real mesh is glorious to look at, but more importantly, the sole benefit of the mesh cannot be realized with a punched hole plate. That benefit is purely sonic. Mesh tubes have a wonderfully organic, euphonic, relaxed sound that is not veiled in any way - open, transparent, yet at the same time possessing a warm inner glow and sense of organic integration that solid plate tubes simply don't have to the same degree. There's something that just sounds very right, integrated and whole about mesh tubes.

That's been my experience with mesh power tubes - and yes, I do have NOS Perryman mesh 45 tubes from the 1930's, dead mint, to compare."

The guy is talking about a 5Z3 tube, but elsewhere on the site he makes a similar comment about 300B tubes. The ONLY true mesh 300B on the market is the EML 300B - all the others are "punched hole tubes" (as he puts it).

Looks like I will have to source a couple of pairs to try.

The best Mesh ever were AVVT's and the only that made today are EML's, heard that they are great to.

They should forbid to call tubes Mesh while they arent Mesh really

Most 300B amps cant use Mesh's

I’m sitting here and realize my current factory 300B’s are mesh plates lol. Full Music 300 B/n mesh plates. Sooo. The EML meshes may still be different? Or should I assume that this would mean that I can certainly run them if I desired? I only see the mesh plate disclosure about compatibility with amps, with the EML’s. No other mesh brand tubes. Maybe partly bc only EML make real mesh tubes anymore? Insight is welcome! I’m considering possibly getting a pair as well and comparing them to the KR's.

I'd like to revive this thread. I'm just starting out on the 300b journey, having recently picked up an old, orphaned Audio Electronic Supply SE-1 power amp. It comes stock with the lowly JJ 300b tubes and a pair of nice 5692 drivers, driven in turn by 12AU7s. Despite it's lowly pedigree I love the sound of this thing!

I also read the statement on the Emission Labs website about the "phony" mesh plates that are really simply solid plates with a bunch of holes punched in them. I get it.

However, I'm interested in the sound. And the journey for me is about comparative value and performance. It's one thing to claim that an EML mesh plate 300b sounds good - it should - because these things are really expensive. However, I've also read of those who prefer the sound of other, less expensive contemporary 300b tubes. And the TJ Full Music mesh plate tube has consistently gotten pretty good press for a couple of decades.

So, where does that leave us? I'd love to hear from those who've made the significant investment in the EML mesh plates and hear your thoughts on how they compare to other tubes. 

Not sure, but I think @charles1dad might have compared some within brand solid vs mesh 300bs... perhaps he'll notice the thread.