Review (1/5): Complete waste of money.
For the record, I purchased the Defender and blades directly from the manufacturer.
I have been shaving since I was 17 which translates to 63 year, starting with an old double edge safety razor and tried every new system that came out since then. The Defender razor/blade gave me the most uncomfortable shave I have ever had. After the first 2 strokes I switched back to my old 3-blade Gillette and the difference was night and day. The Defender gave me a worse and more uncomfortable shave than a cheap disposable.