Tube favorites for Modwright LS100?


Howdy Friends,
Are any of you having success with a little tube rolling for the Modwright LS100 preamp...either the 6SN7's or the 5AR4? And I am sorry, but I am not interested in anything costing dern near as much as the preamp itself...$500 or more for a pair of vintage 6SN7's? Not happening in my monetary (read "happily married") world.
Thanks to one and all for your kind input and experience!
bobup1998
Alfa Lover, did the harsh, bright, hot top end ever dissipate? Just curious. In the next couple of months I may be in the market for a preamp, and was considering adding the LS 100 to my list but harshness is the last thing I want, I want some warmth.
My ls100 is harsh and bright but I am still breaking it in. I hope it smooths out
Jimbones, Dan will tell you that it takes a few hundred hours to break-in. I haven't had any concerns about the sound being as you describe and find it very musical. What tubes are you using?
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.