This leather case for the Zen works well for me. Although I'd agree with other reviewers that it doesn't have a screen protector when the case is open, it will be closed (and fairly securely fastened by the clever magnetic closure) when it's in your bag or pocket, so this isn't really an issue for me. The player sits comfortably inside the case. It isn't 'skin tight' but having done a few (careful) experiments, I don't think my Zen is likely to fall out either. Unlike an earlier reviewer, my case smelt 'leathery' rather than plasticky when it came out of the box. It doesn't show up too well on the picture but there is a trim of red piping around the edges of the case. If you want the all black look, you'll need to look elsewhere but I quite like the red.
All the buttons are easily accessible, as are the various ports although I do question whether the fabric label bearing the logo "Creative" is actually best placed so that it partially covers the headphone socket.
I like the way that the belt clip doubles up as a stand so you can watch videos with your digital friend sitting on your desk.
Yes, of course this is fairly expensive for a small leather pouch. But, on the other hand, it protects something that cost me lot more money very well, enhances my use (by providing that stand) and looks quite nice. You could no doubt buy a cheaper case, but it wouldn't be specifically designed for your Zen and may not protect it quite as well.