LinLai WE 300B or the LinLai Global Elite Permaloy 300B tubes ?

I'm interested as well. I presently have Linlai Elite 101D mesh plate and Psvane WE101D for use in my Coincident Statement pre. Linlai build quality appears better than Psvane, thicker glass, interior build looks more substantial, much greater weight.

Sound quality somewhat of a toss up. Linlai a bit more warm, inviting, analog sounding in my system, Psvane somewhat lightweight sounding, more emphasis on upper mids, still airier sound is enticing.
I suspect Linlai may soon displace Psvane as premier Chinese tube manufacturer. It seems former head engineer and other critical team members left Psvane to start up Linlai. Read about this at 6moons.

Forgot to add, I believe I read somewhere Linlai WE300B is exact same as Psvane WE300B. Based on that, and their marketing, I'd expect the Elite to be the better tube.

At this point, the Linlai Elite and EML XLS 300b's are my two top contenders to replace the Shuguang Black Bottle Treasures in my 300B monoblocks. By the way, the Shuguangs are very nice tubes, reliable, rugged and sound quality no complaints. Supposedly in modern sound camp, they do expose even very minute changes in my system, so I'd describe them as very nicely resolving and transparent.  Really don't feel the need to change them out, simply curious as to any sq improvements.

The Elrog 300B would be at the top of my list if not for reliability issues, I think they're on at least 3rd iteration of this tube. Haven't heard about reliability of latest iteration, don't mean to hijack thread, but I'd be interested in hearing others experience with latest iteration.

In my experience EAT and Takatsuki are the best 300b tubes at the moment

This is an excellent question. I am interested in hearing what others think.

I had one of my ancient JJ 300Bs die and, due to it happening during the holidays and for convenience I locally purchased a replacement pair from the local JJ distributor. The remaining JJ still tested in spec. I don't know how old the pair were, but I think they were quite old. I know the JJ tubes are not considered as being in the top tier of 300B tubes. They sound very good in my system, but I haven't rolled 300bs.

I have read with interest many reviews of 300B tubes and the Linlai are intriguing. The Takatsukis are well-regarded, sound-wise, but are very pricey. It is daunting to consider how to do a shoot-out between the various 300B options these days. There are so many options out there! Linlai look very good. Psvane and TJ Fullmusic have been well reviewed and well regarded. The European tubes also well regarded.

I have been considering buying a new-production pair of the Western Electric 300Bs. I think they're $1500, direct from the factory. This is pretty expensive for new production tubes, but it sounds like they have worked hard to refine the consistency of the production process and are achieving good results. This is about double the price of the standard Linlai and $600 more than the Elite. But if they sound as good as the historic production and last as long, it seems they'd be worth it.

Good luck in making your decision, and please post the results back here so we can benefit from your experience.

I would be curious if there is a complete list of available 300b tubes. The number is overwhelming when it comes to making a decision, and the number seems to grow every year. My top two are Takatsuki and KR balloons. Has anyone heard the AudioNote 4300e?