Best Tubes on Market today?

I've been running 845 amps in my system for nearly 20 years, some noise is inherent to these amps. Relatively high powered SET amp with high efficiency speakers creates perfect environment for creating noise.

One effective way to decrease noise is to use less efficient speakers, my highly modified Merlin VSM are far less noisy than my highly modified Klipschorns.

There is nothing wrong with your amp. As for tubes,in your price range get the Psvane WE Replica, great tube. At a lower price the Psvane TII is very nice. NOS tubes are way above your price range. Shuguangs are decent for the price. I would stay away from Fullmusic, nice sound, not good reliability, Psvanes have nice sound quality and are reliable. My next upgrade tube will likely be Psvane Acme 845.

It is also possible dirty AC could be impacting your system. Power conditioners will be effective here, however, they will likely negatively affect transients with any 845 amp. I've tried many power conditioners over the years, all negatively impacted transients until I tried Furutech. Flex-50 NCF inline filter. This has greatly diminshed hum and maintained transient impact, great filter in my setup.

Here is a selection of tubes from upscale audio:
ECC82 or 12AU7. Are those identical tubes with different names?
Which would be best in your opinion based on experience? 

MULLARD NEW PRODUCTION 12AU7 / ECC82

TUNGSRAM ECC82 / 12AU7

TUNG-SOL 12AU7W / 6189

RCA CLEARTOP 12AU7

GOLD LION ECC82 / B749 / 12AU7

RADIOTECHNIQUE 12AU7

CIFTE 12AU7

BRIMAR CV4003 / 12AU7

Price makes no difference for me here. Anyone with experience on the above ? The original tube in my amp are Tungsram ECC82

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I also recommend Andy from vintage tube Services Inc.. I've been buying from him for years never had a problem with tubes.
As someone else suggested I would get rid of the noise in the amplifier before changing tubes.
I only have experience with Siemens 12Au7s bought from upscale audio. I use them in my phono preamplifier and also in my Zesto bia120 amplifier.  They are similar sounding to Telefunkens. They tend to give you more detail than other tubes in the same class.  


 

If I was trying to solve a noise problem in my amp that I thought was coming from the tubes, I would not think for a minute that I should run out and spend hundreds/thousands of dollars on vintage tubes to solve the problem. I would first want to swap the tubes with another set of known "good" tubes just to see if that altered the problem in some way.

There is no reason not to buy a new set of tubes at reasonable prices to test this hypothesis. Upscale Audio and a number of other established sellers have plenty of quality tubes that will sound excellent and allow you to diagnose this issue without spending excessive amounts of money on a guess.
And I totally agree with all the posts that warn of buying tubes on ebay. That is nothing short of Russian roulette. That is NOT the place to go to solve this problem.

" I've been running 845 amps in my system for nearly 20 years, some noise is inherent to these amps "
I have a Line Magnetic 518iA 845 tube integrated, it makes zero noise