EK First and lounges receive good comments. I cannot recall the same for EK Business or Economy. IME (although limited), EK Business is nothing outstanding at all.
EK in Economy.
Tried that once in a 10 across 777 and never again
EK Business I heard was on par with QF Mainline, but I mostly travel LAN or QF Jetconnect 737 so EK could be better than those 2 options.
Once again wuold only consider after I requalify WP and *G.