IMHO -YES!
Better food, service tend to be quite attentive as well (in fact the quality of the service may be better than that for J due to staffing structures).
Thanks serfty. I'll leave my upgrade request in there then...
Btw - can anyone check the availability of QF 31 on that date (9/9). I normally use this tool: Travel and Transport Class Availability Tool
But it doesn't seem to be working at the moment...