Had a look at the returned set today and the grinding is no better or worse than any of them are or have ever been. The 4th photo does make them look like like a ploughed field but I reckon the 2nd and 3rd ones are probably more representative.
The Narex range are not about being the most deliciously wonderful chisels ever, they are about good steel, the right shape, comfortable and well balanced, consistently hardened and significantly cheaper than the AI's which is the next time all of these factors converge in a single range of chisels. Price plays a bigger role in some people's decision making process than others, but for a lot of folks getting very similar functionality indeed for less than half the price is attractive.
I do take your point about the stain on the handles (which are hornbeam - not beech) and we will shortly be having some made with a clear finish (same price) which I think will be very popular. They have also offered to polish the blades but after the debacle with Kirschen a few years back I thought we'd stick with ground and leave polished blades to the Germans who apparently love them. If anyone needs anything else from the extensive Narex range just pop me an email and I'll be happy to order it for you with our next shipment.
The Pfiels are very good chisels indeed, apart from the wedge shaped sides which will gradually grow the sides throughout their life. The Narex cabinetmakers are around 1mm all the way up, which is about as fine as you can get by machine but well within range of being dressed with a small diamond file at 45 degrees if you did need them finer.
The sides on the AI's are finer still at about half a mm, this is achievable because they are hand ground, freehand, like this:
No jigs or fixtures, just like the olden days but without the silicosis.
The backs on the AI's are also very good indeed and when drawn along a very fine stone should just allow the underside of the cutting edge to be polished whilst still being flat enough out of the packet to pare exhibition grade joinery. They harden them to within a hairs breadth of the optimum for O1 (RC61) and as long as you can get them back to the factory, they will happily regrind, sharpen or repair them as necessary for the rest of your life.