Disclaimer: I've only flown F on NZ, so no experience with their PE product, and Skycouch is very new. From what I've read and pics, and talking to some pax on the shuttle bus at LAX who had just flown Skycouch, it seems that Skycouch is more comfortable for sleeping than PE and close enough as a seat. Obviously you don't get the PE food and service, but I'd pick Skycouch over PE. I'm not convinced that PE has that much extra leg room that it matters (but then I'm only 6' and not 6'4").