Sony SCD XA5400ES tube rolling?


Just got my player back from Modwright,fully modded with the ultimate upgrade. Wow! incredible difference over the stock player even cold out of the box.

Now the question, anyone have experiences with tube rolling with this player? The stock Russian Tung Sol 6SN7s are supposedly fine, but I decided to order some KEN RAD WWII military (VT231)tubes and see if there is a big difference in sound. In the mean time, awaiting their arrival... comments are welcome.
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OK, I'm ordering some Sophias. Fortunately, I have 4 6sn7 tubes in my VAC 300.1a amp, so am able to roll same tubes in there. Since the Sophias are so closely matched, I could use them for the input 6sn7 tubes in the VAC.
I'd also like to hear from those who are pulling the trig. on the Sophias and how they sound against the best of the NOS 6SN7, VT231 and so forth brands.
How do they sound against the beloved Sylvania "Bad Boys" or the 'Holy Grail' TungSol's?
This should be interesting..

thanks again guys!

Dave
Wig- That doesn't surprise me. The Sylvanias sound amazing in my rig too and I don't see how a new production tube could sound better. I'll post the results of this shoot out.
i'm buying a pair of rca grey glass from the 40's.

while i would prefer the brimars, they are hard to get and very expensive.