Hi Don,
The large dodger option for my boat is no bigger than the one in your pic above. It covers the winches and companionway and that's it, I dunno what the hell the smaller option was for!
A good looking one depends on the boat I think, you need to follow the lines of the boat which most do a bad job of. I don't like the factory dodgers on mine, besides, I clamber over the boat too much. But that's because of the racing, for cruising I'd love one where you could sit in the cockpit and still be undercover.
The French were pretty enthusiastic about a hardcover version for my build, but that was purely for singlehanding intent (my first build idea), it was a takeoff from their race boat but modded for my cabin top. It was awesome how well it worked on the race boat, but it was like an all or nothing thing, it took a huge chunk out of the crew space in the cockpit.
Still liked the idea though. The following pic is the hard cover from the race version, it looked pretty much the same.