I have been flying PE with my family of four for the last four years. Our first flight was on the now retired A340.

Then we flew a series of flights on the A330s. I generally liked this product and agree with the above comment that distinguishes what is better than average about the SAS Premium Economy product.

My one observation to add is that I generally found the cabin to be warm and there are no individual air nozzles. But I'm a Viking so YMMV.

I also agree that the A350 product is better, I actually found the leg support very comfortable and helped me sleep a lot. I'm 6'1 and I see that maybe I'm at the max end of the cutoff for this being really good. For what its worth my wife at 5'7 wasn't a huge fan, I couldn't tell you exactly why maybe she's just tired of me nerding out about airplanes.