I think the C5 particularly is a nice looking "retro" ride, which offers most of the creature comforts and ease of operation of a more modern machine.
Kind of a blend of the old and the new, which seems to be attractive in todays market.
Be aware that it IS low powered, but it can do highway cruising within the legal speed limits in most cases. It's not a bike that's oriented for speed. If you like casual riding around interesting places, it's especially nice. For high speed long distance touring, a bigger bike would probably be more suited.