When I used electrics I liked Braun the best. For me the secret was this. Talc and paraffin. Makes it glide. Have you considered a Supply injector razor? I got one recently and like it. Might gift one to my brother for Christmas.
Looking for a decent one i tried a rechargeable in the past but it was useful nevee held a change and was always getting snagged by it
I like the Braun Series 7 with the floating head. It's marketed as a men's shaver, but works nicely on my legs, especially around the knees.