If I was going to have that much trouble finding a set I was just going to settle for some Climair ones. I believe that's what @Merlin's 5th gen is sporting and they look good to me. (I was going to get a set for the 3rd gen actually). Only £49.50 as well, which now thinking about is probably going to be much cheaper than a 2nd hand OEM set demands by the sounds of it