Flow wise there spot on and quality looked good to me. Only thing that didn't look amazing quality was the flexi pipe but I've only had mine fitted for about 1000 miles as the car doesn't do much mileage so can't really tell.
If the flexi does go though I'll just buy a good quality flexi pipe and weld it in the old ones place :) i couldn't justify the price of the branded downpipes, other than the flexi there's nothing too em!