I have a vendor with whom I travel from time to time. He's always offering to fly me and I've only consented on a few occasions.
I told him that I want the miles so I'd be more inclined if he had a frequent flyer program.
Honestly, it's not that comfortable up in front and I feel trapped (not easy to climb in/out of the right seat). It's about a 6-8 seater so it's probably a bit more comfortable in back but I think I'm supposed to stay up front and chat.
The view is nice but I frankly like the anonymity of flying commercial and emotionally shutting down (eyes closed/sleeping/reading/watching ipad/etc) while in flight.
The plus is literally driving to within meters of the plane and dropping the car off at valet and the same on return.