I use a good Braun electric during the week and it gives me a better shave than the barber I go to who uses a straight razor. That said, I DE wet shave on weekends because it's a luxury. The electric doesn't compare.
Fresco is a trademark of Minnis so technically no-one else makes it. I believe there are high twist fabrics as light as 7 ounces from Italian mills but I have no experience with them and can't recommend that you do either.
I will submit that for a purchase of half a dozen pair or more it may be less expensive to buy your socks in San Francisco. Shipping is $27 and there is no material VAT or import duty.
The socks themselves are sized, and of excellent quality.