I have flown both the products you have mentioned. I flew sky couch with my younger sister (160cm) and I am 170cm, and we found it quite uncomfortable. I flew PE from AKL to LAX. To be completely honest, my bum hurt after the flight (i found the seat quite hard), however, in saying that, it was one of the best sleeps on a plane I have had (not in J). In my opinion, i think you should go for PE.