Tube Rolling with the Line Magnetic 518 IA


I recently took delivery of the fine Line Magnetic 518 IA. This is an excellent integrated except it comes with basic inexpensive tubes. I'm lloking to hear from those who have done any tube rolling with this amp and what combination turned out to be the most musical sounding. Also interested in how many hours it took to break in this amplifier.
frontier1
845 - Psvane

12AX7s - Mullard ECC83, long plate, goal post getter with code f91 on tube (about 1958), about $200 - 250 for a good matched pair on ebay from a good seller.

6L6/KT66: original (not reissue) Genalex, matched pairs $300 - 400 on ebay (a pair there now at $425 buy it now).

5AR4/GZ34: Mullard BVA or Phillips Mini-Watt, both metal base ($300 - 400).

You've bought an $8K integrated...treat it right. :0)
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.