ring fingers around the rings on the bar, feet flat, back arched (which helps with pinning the shoulders under the bench) and leg drive. Keeps my body tight for the lift and feels the most natural. Some people bench better with more or less arch, as long as the glutes are touching the bench itself it should be fine. Most of the criticism I've seen is directed towards those in non IPF feds who do the exaggerated arch with ass off the bench, on the tips of the toes with a super wide grip, usually females.
I wouldn't even bother bench pressing if I was lifting for 'aesthetics', I'd use DBs and do things like dips. I'm not a huge fan of the lift at all, I much prefer overhead pressing.