Best 845 tube out there?

Hi all, I received the WE845 Shuguang this morning.
So far they sound less good than the 845B, especially on the treble.
They sound more spectacular with solid mids, definition and huge soundstage, but they shout, not refined at all on the treble.
It seems to me my sweet single-ended amplifier went from 22 watts to a 75 watts shouting solid state amp or a Cayin 500. We'll see if there is any change as the tube burn in a bit. But I am sceptic.
Please remember I am using high efficient wideband speakers with no filters and paper-cone so they are very sensitive and transparent. It could be that the "added" punch of those tubes convince people with low efficient speakers.
More to follow...
Cheers
Olivier

Olivier, thanks for the report.  I have what sounds to be a similar system and I notice that "shouting" sensation on a lot of stuff that's new...hopefully you'll hear the voices move back in the soundstage with some burn-in, as you suggested...I suspect you will.  I am coincidentally demoing an Aqua Formula DAC, which by all marks should be phenomenal in all systems, and it sounded exactly as you describe at first--took a long time to burn-in/settle-in and balance out in my system, but it finally did.  Also, check your vibration/isolation of your amps...these tubes might be more sensitive to vibration than the others?  I've found Vibrapods and the like to help mellow-out shouty vocals in high sensitivity speakers, all else equal.  Let us know if the burn-in helps, please--hope it does for you!

I'm also interested to hear how Oliver's tubes mature. I am back listening to my Psvane WE845 but I know at some point I will need new ones hence my interest.

I will come back at the end of the week and tell you if some changes are observed. It should obviously, but will it change in the good direction? we'll see. 
Parsons, I indeed have Sorbothane pads under the amp. 
I would like to say that so far what I hear is not an evolution of the 845B, but rather a different family sound and signature. 
More to come...