Sophia Electric New EL34 tubes

@wig, some of us have been trying to get some feedback on the new 
sophia blues.  Thanks for providing a brief encouragement.  This is a recent thread where @winoguy17 was looking specifically for feed back on the 6SN7.  I think we would love to hear more regarding your experience with the sophias vs. various NOS tubes.  I'm also interested in the 274B.  Some say that is a pretty good tube in ModWright power supplies, and I had thought to give it a try.  Any additional thoughts from you would be most helpful.

@wig , thanks, this is very helpful.  I will probably pick up a 274B to try in my PS 9.0.  So far, the Canadian Westinghouse  V-71 is the best rectifier I've come across by a substantial margin, including the GZ34 Mullard and the Philips tube that Dan Wright prefers.  Brent Jesse put me on to the Westinghouse, but as far as I can tell, these are now unavailable.  I've had two of these tubes go bad in the last 12 years or so, and I still have 2 spares, but I'd love to find a current production alternative. 
I need 8 6SN7s in my AtmaSphere amps.  I won't be spending $1600 to retube my M-60s.  Also, there is not space for more than 2 of the Sophias per channel.   I may pick up one pair to rotate through the 4 positions just to see what gives.  You've given me some good advise in the past so I trust your ears.  But those 6SN7s are mighty pricey.