Tube favorites for Modwright LS100?

Stock: Tungsol, Shaugang. Yes, Dan did say 200-400 hrs. This unit is not new but a "demo". I have a feeling it was sitting for a while. I only have about 70-90 hrs on it. I guess I thought that since it was used previously it would only take a light break in. OK so I'll have to just get through another 300 hrs or so.

Have 300 hrs on it now. Replaced the stock tubes with rca. Sounds much better

Just put a new set of GE 6sn7GTB tubes in a few days ago. It only took about 30 hours for them to start sounding nice. Initially they sounded thin with no bottom end. They are balanced with good upper end extension and solid bass. Nice tubes for $45.
My LS-100 had a set of Sophia's in it, but they were terribly noisy. Seller said they were good, but somehow before they arrived they got very noisy, one a lot more than the other. Seller packaged them separately and wrapped well. I'll probably try another set in the future after many people said they're excellent tubes.
I just missed the UPS man today who was bringing my set of Shuguang Black Treasures. Will have to wait until Monday for them now. :(

IF anyone is still reading this old thread (there are still some of us who are still buying the LS100) I would recommend a NOS pair of CBS Hytrons. These are unsung heroes of the 6SN7 world and coupled with a good 5AR4 rectifier that is NOS, or in my case, a Brimar 5V4, and things really do come alive. I also have a set of Brimar CV1988 tubes (6SN7) which are simply phenomenal with the Brimar rectifier. When these are all paired up, the LS100 sounds like a $10K - $15K preamp. While NOS tubes are not inexpensive in some cases they sure can bring out the best in some equipment. It is not the NOS tubes' fault that there are so many people out there who try to gouge you for every last dime out of your pocket and hence, spoil it for some who really could experience some wonders out of their LS100..

Oops - I would also like to add that not only does the LS100 benefit from some excellent NOS 6SN7 tubes but also a very good aftermarket power cord. I am using a Shunyata Delta NR that does probably more for the preamp than the NOS tubes...
Perhaps a topic for another posting?