Best 845 tube out there?


I am running a pair of Cary CAD-211AE monoblocks with the standard no-name Chinese tubes shipped by Cary. Whilst I am happy with the sound, I think I should buy a pair of 845's to keep as backup in case something happens to these tubes.

Because I will need to buy FOUR of them, this rules out any tube that sells for stupid money (e.g. vintage RCA 845 tubes).

The only current production 845's I am aware of are:

- Shuguang 845 "standard"
- Shuguang 845B
- Shuguang 845C
- Shuguang PSVANE 845
- KR Audio 845

I have found reviews of the Shuguang 845B and 845C, but there is virtually no information out there on the new Shuguang "psvane" 845. Has anybody heard this valve, and is it a noticable improvement over the 845B and C? Also, what do people think of the KR?
amfibius
Are there any updates regarding the performance of the Psvane WE845 from people who use them? Thinking of purchasing them.
I need to correct an earlier post where I recommended the 845T tubes. I've been using various 845 types for at least 12 years and these are the only ones that ever failed -- two of them. Silver lining is that I was "forced" to use my back-up metal plate 845C (which I once said sounded "metallic") and find I like them so much better than the 845T types that I have put off replacing them. Sometimes things do work out :-)
I took the plunge about 3 months ago and purchased a pair of WE845
replica's from Grant Fidelity.
Excellent tube. Much better then the Shuguang 845B tubes I had been useing
Read Tcscata's 3/13/14 review which is spot on.
Enjoy
Thanks, Goldeneraguy.

If you don't mind to share, what amp and speakers do you use?
Findog , I have deHavilland 845G mono amps powering Horning Aristotles Ultimate hybrid horns
Of course your source and pre are extremely important as well as wires room,power, anti vibration tweeks and on and on and on