Personally, I've found them to give a really nice shave. The wide head works well. It is imperative that you have a good spool though and this is where the razor falls down - there are very few good spools, even less new and fully packaged and even less than that well stored to ensure a good shave.
Either way, it's a really nice piece of history.
I have the one in the white case with the slide back lid. Very retro.