I flew both pretty extensively, both domestic and international. The 300 has less redundancy in things like the single Y/D and aircon pack, so a bit less of an oceanic plane. The basic 300 is a six hour machine while the 605 is more 7+15 p, both at M.80. I’ve done 8 with 9 pax in a 604.

The 604 Nextant Fusion cockpit mod looks real nice, but lacks the bigger cabin windows of the 605. The 604/5 cabin really sells it, room wise.

Both “wake-up” and “good to bed” in 15 minutes with experience.