There are cars from any era that look great, but cars never performed better than today. I see these Mustangs, Camaro, and Corvettes of yore going for hundreds of thousands of dollars, but you can buy one built today that will drive the older versions into the ground while costing much less.
While we're at it, let's add the cars of the 1930s to the list of great looking cars. The Rolls Royce, Talbot Llago, Lincoln, Cadillac, and Bughatti of that era look fabulous. All had balky manual transmissions and terrible brakes.
For me, good looks and top performance make today the greatest era in automotive history. Oh, and you can have all those old cars now if you pony up for them, but you couldn't have today's cars back in the day. Yeah, today's the day.