While no substitute for a lay flat I’ve flown SYD-LHR / LHR-SIN in Y+ QF (upgrade from Y) and as someone that can’t usually sleep in Y (despite only being 5’4) I found I was able to get some decent sleep due to the extra recline and extra seat width. I also enjoyed the improved F&B and smaller cabin meaning more attentive service. I personally think it’s worth the points, and would happy put mine again to Y+ if J was not an option.