Tube Rolling with the Line Magnetic 518 IA

I'm about to take possession of a 518 and wondered about tube rolling as well. Would be ok to suggest some trusted/recommended ebay sellers?

Tried a pair of GE5751's for a couple of weeks then switched back to Nos Philips JAN 12AX7's. Phew what a difference 12AX7's made everything sound spectacular again. I guess the 5751's were too polite for me. Current compliment I am enjoying is the above 12AX7's, Mullard Nos Rectifier., stock 845's and Shuguang Black Beauty 6CA7Z's . Dynamic, involving, organic, all the good stuff.

tried the Psvane 845 II an the Psvane 845 WE Replica either one will send this amp to new level stuck with the 845 II ,just a matter of preference also replaced stock 12ax7 with the Psvane premium series TII and heard a improvement over the stock 12ax7,,

Just purchased the 518 and only have about 10 hours on it but very impressed with build and sound quality thus far. I went ahead and swapped in NOS Mullard 5AR4 and GE 12ax7s. May swap in NOS GE 6L6GCs after further listening. 

BTW driving Daedalus Argos V2s with the 518 , very easy without pushing volume