Up there with the A380 in terms of pax experience, which for a 50 year old design is a tribute to the people who designed and built it in the first place. Always enjoyed 1K on the BA models, heading off to somewhere like CPT, or JFK, or SIN, or HKG for a little business and a lot of pleasure. 62K and 64K on the UD were also great places to be. Always reassuring to see a Jumbo with a Union flag on the tail sitting at the gate.