These are an excellent winch for European bases. They put less side strain on the base than the Chinook Europin one. Although I have used, and had good experiences with both types, I find the Unifiber one easier and nicer to use.
Truth be told, I usually just use the black centre part of the Unifiber one as a downhaul handle with the cleat. Using Formula rope, it is so easy to downhaul my current sails I just don't need the extra power of the winch.

Take the stainless handle out and thread the rope through the centre hole and then into the cleat. Then just pull.