Tube recommendations (EF95/6AK5/5654 etc..)

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Hi Guys,

 

I am looking for the following tubes:

 

Amperex 5654

GE FiveStar 6AK5

Mullard M8100

 

and lastly some Russian 6N6P.

 

Are these tubes commonly available? Intending to head down to Martin/Well Audio soon.

 

Would anyone have any alternatives to recommend? Or anyone has inputs on these?

 

Thanks in advance.