$6k for a reliable bike that won't grow out of. Z650?

Asking for a friend. He rode a 250 years ago and wants to get back into riding. $6k for something that will last and won't need to get traded in after a year. New or late model as to not need repairs.

Local dealership is offloading z650's for $6500otd but I also see the bike is considered boring and reviews are meh (granted, reviews are usually by experienced riders).

I can't think of anything else to suggest as it'll either be an even smaller bike, cost more, or will be a well used price of work.