Emirates first class is pretty good along with Qatar, they really are a class on their own, Cathay pretty good as well. My corporate gig used to get me business which I would occasionally upgrade to First with points, I could never justify paying it. Stateside I've flown American business earlier this year LA to New York, new plane as comfortable as any other business class going around in my opinion, get an old plane and it makes for an overpaid coach experience, use flight number and seat guru in an attempt to get better value but there's no guarantees as planes get swapped all the time.