Difference between mesh vs. solid plate 300B?

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.

In my opinion Emission Lab mesh plates are worth the money. BUT, while they rarely have problems, they aren't good about honoring warranty on those rare occasions.

That may be who you are dealing with.  I have been an EML dealer for a couple of years and have found Jac to be extremely helpful in terms of warranty issues.  The only time it is a problem is if someone just ignores his advice and mis-uses a tube.  For instance, the EML Mesh tubes have a max plate dissipation of 28w vs. the standard 40w.  If you put them in the wrong amp and/or don't adjust the bias down and they burn up, he isn't going to honor the warranty.  Otherwise, the couple of failures I have dealt with were addressed immediately.  Jac even facetimed with a customer to help him modify the bias on an amp when he had an issue.