Module 4.1 is a great system.  You get a high-quality Wolf winder, with a door at a decent price and you can add a unit when you need to.  Say you have 3 autos and you get a 4th.  Now you have a choice of buying a 1-watch winder that doesn't match or buying a 4-watch winder at a cost of ~$1000 leaving you with an unused 3-watch winder.  Neither is a good option.  With the Module 4.1, just add a unit and it looks great.  Plus if one fails, you can swap it out without buying a multi-winder unit.