i am debating between an 83,84, or 85 nighthawk cb650 - 6 speed, 650ccs, dohc 4cyl, shaft drive

and a nighthawk S from those same years (i think)
more displacement (750 cc) and more aggressive styling..

i was also considering an older (mid 70s i think?) cb550 four.

i'm looking to spend about a grand. i'd appreciate any advice anyone can give me, if there is one that stands out on that list as being really good or bad, or if there is one that is not on the list that you think should be? I'm looking for something 500 cc to 750 cc (honestly i think the 750 would be too much for me)

it would be a first bike for me, but i am getting the basics down on a smaller bike of my friend's.

I don't like the sport styling of those new bikes, its too much - the nighthawk s is about my limit.

now officially a troll, i guess. used to have a black 96 SE, until it broke down one too many times. now I'm hunting for a motorycle.