Best current EL34 tubes


I need a matched quad and noticed that the svetlana. Electro-Harmonix, and JJ are all about the same price. Which are the best ones to buy for natural sound accuracy? Thanks for the help in advance.
128x128pugstub
If you buy the Winged "C"(which I would also recommend): be certain they are the newer ones(from the St Petersburg plant) and not someone's older stock. You won't find a more dependable seller than Upscale. Check out his test/burn-in procedures(listed here): (http://www.upscaleaudio.com/product.asp?itemid=63&catid=86)
I own a hybrid that right now has stock Chinese EL34s. I would like to upgrade. To that end, I found this post but I'd like to ask about the intent of Mrtennis 5-13-08 post. Not trying to be a provocateur but is that sarcasm? irony? The qualities listed seem desirable. Mrtennis, do you have a recommendation?
I've had some bad luck with the SED winged tubes over the last 18 months, and have 2 go in my Marantz 8, One took a resistor with it.