Panasonic's latest ES-LV65-S has got a five blade cutting system in it. It has an in-built sensor that detects the density of stubble on your face and automatically adjusts the motor's speed so that it can hack its way through.

And it's also waterproof, which means you can shave in the shower too. There's an LCD display providing detailed information on the razor's chosen shaving mode, and indicators of when you need to clean it, or when you should replace the blades. A full charge will give you 45 minutes of shaving time. Sounds superb, except its also got a price tag of $450. Yikes.