Leben CS600 owners, what tubes have you rolled?

HI TO ALL FRIENDS HERE.
im the own of the leben cs600 too,and im listening to my devore nines speakers.
im wanna replace my old tubes and my currently tubes are:
electronic tube 6cs7 made in usa(pre-tubes) ,sylvania 6cj3(stabilizer tube), goldlion kt77 genalex made in russia(power tubes).
i must say i read all the posts here and i dont understand few things.1. the kt 120 tubes is the power or the pre tubes ?
i guess the power or im wrong ?
2.Reflector 6n3ce tubes is replacement to the 6l6gc or el34 ?
i like to know if i order the original tubes from leben company its mean the leben sounds is not better then all the tubes you suggest here?
thats all please im so confused about this models of tubes and i like to do smart and good purchase please help me
thanks alot and sorry about my english.

ok . im understanding now Reflector 6n3ce= 6L6.
bout few things more what about the power tubes ?
and stabilizer tube?
what to choose im already have now KT77 GOLDLION GENALEX tubes and Sylvania 6cj3 stabilizer tubes what recommend?

and why is better to prefer them on what Leben suggest that is keep the leben sounds ??

i still not understand from the response what tubes he mean
The reflector or black plate 60 can u write it clear the name of the tubes
and what about Kt120 what company and its match to leben cs600 or my cover burn
Sorry bout my english not my first lanaguge

ok i get this recommend from Jim McShane
(1 quad) 6L6GC-STR Tung-Sol reissue, $87.50
(4) 6CS7 - 2 Sylvania & 2 Raytheon/Japan, $38.00/set
(1) 6CJ3 GE NOS USA made, $7.50

what you think about this set for my leben ,its better then the original tubes that leben put ??
and the kt 120 its better then what Jim recommended ???
thanks alot wait for response.