If your going to only buy a couple of razors then go the cheap route.
The Radio Shack would be sufficent in that case. It has its own light source and although the resolution stinks it will show the nicks in the blade. Use the 60X setting.

If you plan on doing a lot of razor restoration then a scope with better resolution is called for. But note that 30X is ample, just make sure it has its own light source.

If you like the techy side of razor restoration and honing then the QX5 would be really cool.


Hope this helps,