We can only go one what you write and how we feel reading between the lines.
You said somewhere about happy to learn mechanicing skills and then say you don't want to change the clutch cable.
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The comments about unreliability come about because people fiddle with what they don't understand until they break it and then blame the bike.
Go for the earliest bike you can afford. Everything will have been fixed that's going to break and modifications will have been carried out to get it reliable.
If you hate it, then you will be able to sell it for what you paid. Unlike a newer bike.
I put it to you. If this bike was as bad as some say, why would they still be in production after all these years?
It's not a Japanese camera, for sure. But they are reliable! You should wash the bike, say once a fortnight or after a long run. That's the time to check her over for any loose fastners. If there are any then use Loctite and re-tighten. Check the oil level. That's it! Well you could go mad and polish her and lube the cables and drive chain.
There will be issues. But post them on here, or on the UK forums, and you will get the very best advice.
Remember it is a vintage machine and treat her with respect and she will pay you back in spades.
The guys over there can't go anywhere without drawing a crowd. You're going to be a number one attraction!!!
Or you could buy transport and get a Honda.