Very interesting about the Jumbo though. I certainly won't turn a course down, but must admit the ultra long-haul lifestyle isn't my preference!
I shouldn't worry about ULH at the bottom of the Jumbo list
You'll find a great variety of work assigned to you, often bordering on MH. ~7x daily JFK varies from an 0830 departure to 2000
Or for variety, BOS, and the odd LOS thrown in
NoD