All of which shows it's personal! I find WT+ much better for sleep - no shoulder jostling, can fully stretch my legs without anything impinging. A decent neck pillow, eye mask, ear plugs, some chemical assistance et voila. I once managed 12 hours sleep back from SIN in the late lamented "Captains' Chair" on the hi-J 747.

14 hours trapped in WT seat. Just no.