I have 4 almost new Siemens EL34 tubes and a few more (4~6 Russian/Chinese) variants. If I go for monoblocks, sure I need to use 8 or more tubes, but I'd rather stick to a single steroe amp.
It might not save me whole a lot by sticking to EL34 tubes, so I would rather look for some other options too.
Thanks for all your responses.