When DL carried Glenlivet single malt, there was nothing better to me (when I scored an upgrade) than settling into my favorite FC seat and relaxing with a few drinks when I knew my wife was picking me up at the airport when I arrived. A PDB, then another double or two, then dinner, then a few hours of sleep onboard. Of course now that they don't carry Glenlivet anymore I'll have to make do with something else, but those were some enjoyable flights!