• I think Rohloff is way out of my budget. I've also heard some bad things about Alfine 11, so most likely what I am looking for is something with Alfine 8. I have no idea what are "vintage SA 3 or 5 speed" :)

  • Sturmey Archer. You can still find vintage ones out there (they do last after all), as well as Torpedo ones (pre SRAM), but the Alfine 8 is the one you should be looking for if you are after an OTP.
    A belt drive would be a logical pairing IMHO.

  • Apologies. I meant (mainly) British 3/5 speed bikes with Sturmey Archer hub gears (I have several 60s/70s hubs - all still shift flawlessly). Very low maintenance and pretty cheap. But might be harder to get in Finland.

    This type of thing (not the prettiest, but an example nonetheless):

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