I get Caviar at Maison Petrossian ;-)
On China Eastern, the seat difference did not look massive. Can't tell for the service (FTR: was not great anyway in business).
I heard great things about the 1st of Singapore Airlines, Air France (even if the business and eco are sh1t..) and Emirates.
Never tried... I get stuck in Business :-)
RE: Frequent Traveller #98: Swiss First Class for a Killer Price!