Unfortunately, it is not really comparable for me, as I do a lot of EL. But as said, a lot depends on the quality of the materials used. And the Q-levels say little about how even it really is in the end. They just define what all has to be done. But not how even and smooth the final result must be. There is painter's fleece with 40g/m², you might as well leave it out. A small reference: In my GÜ, painting with Q2 and textured wallpaper would have cost 9800 EUR, contract from two years ago. Since I, or rather my wife, categorically excluded textured wallpaper and the upgrade to Q4 with painter's fleece would have cost something like 24,000, I had it removed.