The EML 300B-XLS
http://www.emissionlabs.com/datasheets/EML300B-XLS.htm
I can't speak to the V2 Elrogs. I don't have them and I haven't auditioned them.
EML offers the best bang for the buck, across their entire line. Not tops in sound quality, but just under that top tier (we're not talking massive degrees-- just slight differences), for most folks it's "close enough" because of the lower cost.
Click on the "Fake Mesh" link-- where they talk about the shortcomings of the punched plate Sophia tubes without naming them directly.
I have the Takatsuki 300B. In my WA-5LE V2, it's the best I've heard, but at twice the cost of the EML, it's nowhere near twice better than the EML.