Difference between mesh vs. solid plate 300B?

I am looking to replace my 300B tubes and I am considering the Emission Labs 300B. This comes in a mesh and a solid plate model. There are other valve manufacturers who make solid plate vs. mesh 300B's, e.g. TJ Full Music.

My question: Can one make a general statement that mesh sounds different to solid plate? If so, what are the differences?

(Second question: the EML 300B mesh has a clear warning not to run the tube at high bias. I am wondering if there are any Cary 211AE owners who are running this tube).