I only have experience with the Heart of England version. It gives sufficient protection, looks neat and elegant and are cheap. The Williams (many sell them) were a bit too invasive for my taste, but I suppose it is a direct bolt/screw on that takes a few minutes. With the HoE, if they go straight on you are lucky. I had to adjust the shape by bending them ever so carefully, shortening them a couple of cm and last but not least widening them a bit. It is a U-profile meant to go over the edge of the leather panel, but in my case it was a little narrow. The whole operation took me about an hour and demanded some skill and accuracy. I cannot say it was difficult, though but certainly not screwing in a light bulb.... It was a rewarding little job and the result looks very elegant. If you end up with the HoE, PM me and will tell you exactly how I did it including my small tricks. I have put them on two cars so far. If you look at Morgans of a certain age, the egde of the leather panel is almost invariably chuffed, so this is a good investment. It also permits you to slide in and out of the car a little easier. But my best mod? Still - as I mentioned - convex mirrors, ALL three of them. Also from HoE.
