I agree the Karrimor gear seems to be of better quality - starting from a low base.
I worked in the centre of Preston for a couple of years, to pass my break times I often walked into Sport Direct, I never bought anything as the quality was so low, especially the footware. You can skimp a some cloths, but not footware.
But this weekend I went into a Trek & Field in Ambleside and I was surrprised how much the quality had impoved. Prices were still rock bottom, but the quality seemed half decent. I gave Mike Ashley some of my cash for the first time, for some approach trainers, I intend just to go to the pub in them, for £18 they seem a bargin.