I rode one briefly some 20 years ago...it belonged to a friend. I stopped riding shortly after that (accident) and when I started again 17 years later, the only bike I wanted was a gb500. I couldn't find one locally, so I had one shipped to me from Kansas while I renewed my motorcycle endorsement. It arrived, I fired it up, and took it around the neighborhood. What a let-down. It had its charms, but it was uncomfortable, underpowered for highway use, and kind of a dead end from an upgrades standpoint. Sold it and bought a new triumph, which turned out to be equally disappointing for different reasons.
1971ish 'AmbassaRado' (a work in progress)
2008 Moto Guzzi Norge