All of my newer suits, both sb and db, are ....
side vented. I still wear some center vents. Which you choose is really dpendent on your shape. Pear shaped men would not look good in side vents. Slim men can wear side vents well. No vent, I only wear in a tuxedo. The no-vent jacket does wrinkle appreciably more than a vented jacket. I never put my hands in my pockets so that issue doesn't bother me.