Sorry for double posting all the time

Before you've posted anything I get new questions I have to get answered

Just a short question, if you buy the La Figaro 332C from Lucky Frog Audio, you get two NOS tubes with that... You get Svetlana 6S19-V and ECG 5654W. Are these good ? Is it better to buy others ? It looks like you get one of each tube, and they are different types of tubes... I don't know anything about tubes, but don't you have to pair these with exactly the same tubes ? Sorry if I'm totally wrong

As I've already asked about tubes and stuff, and I'm a rookie with tubes... When you change the tubes, do you have to replace the old tubes with tubes that are the same model ? Only change brand.... So this amp uses model 6S19-(V) as power tubes and 5654W as driver tubes ? Please enlighten me if I'm totally wrong....

EDIT: I don't know if you already know this (and if I should mention it in this thread), but there's pictures of the La Figaro 336 Classic on
LuckyFrogAudio, if someone are interested...