The Philips Norelco cordless electric shaver is comfortable, lightweight, and effective. The only reason I didn't give it 5 stars all the way down is that it doesn't have a pop-up clipper for sideburns, etc. It holds a charge a long time, and can be used with the cord if desired.
Pros: sharp blades, long-lasting charge, can be used with cord
After many years the batteries on my old Philips Norelco shaver have given up so I looked for a replacement rotory flex head shaver. This is a good shaver. The flex heads follow your face. It is also good for picking up the few long hairs on your neck. I have had another type of shaver that would not cut long hairs even though it gave a really close shave.
I get as close a shave with this as I would with a blade razor. If the blades hold there edge for a long period of time, this will be a good investment.