Use one of my Southdown tups on my Badger Face every other year for commercial-type lambs, then breed the BFs pure the next for replacements. X lambs are up and suckling within 10 minutes, have long, curly fleece and no markings other than a slight mottling on their nose, and woolly legs down to the hocks. Never had one with the slightest problem, all survived through to weaning. Tried a SD on Lleyns one year when I had 20 of them. Disaster - some scanned with quads but none raised more than twins, Lleyns were very nervous mothers, all sorts of problems. Sold all the Lleyns the following year.