Different saddles are appropriate for different riders so it's important that you understand what factors are important for the rider.  If the customer is looking at a Kincade Redi-ride, both saddles are adjustable.  If the customer is focussed on price and is a pleasure rider who does not go on long rides, than the Kincade may be more suitable.  If the rider is more focussed on quality and horse comfort and is doing long rides or is a member of a riding club, then the Wintec may be more appropriate.  The other advantage for the Wintec is resale"