Jets are actually a bit of a pain for long haul though as you have to keep on refuelling, and the various private airfields will charge you an arm and a leg for the privilege (to say nothing of the time it adds). First class with a reputable carrier is much better unless time is very tight, and even then you really need to get hold of a corporate jet (with a fully staffed logistics teams who can get you the best routes). Downside with the corporate jets these days is that Sarbanes Oxley has made everyone clamp down, so you can't just nip off in Uncle Richard's corporate jet.
The upside is of course that by using a private jet on private airfileds you are exposed to fewer germ-ridden people.