Sorry, I just saw this. If you’re still interested, the thing that I was looking for was a darker, less sustaining G string. It’s mostly an issue amplified. But….it also had to sound decent with the bow. I do enough bowing gigs for that to matter.
Anyhow, the oliv G is probably the best compromise of the ones I tried, although I didn’t find it that much better than the Evah weich G for pizz with the amp, and the Evah G bows better for me. So I ended up buying a new set of Evah weichs and I’m happy for now. My bass is pretty bright and mid-rangy, it’s a smallish flat back juzek, so I need dark strings to balance it. Spiros would probably not work for me.
You’re in Greece (I think) so it’s not practical but I do have an oliv G I’d be happy to sell, it does have a bit of unwinding near the nut. I don’t know how long it would last but it would be good for someone who wanted to try one.