Skateboard by far! Or a cruiser with some concave and a kicktail. Penny's are basically useless because of how short and flimsy they are, and wrong... I mean "long" boards are just too dang boring. Not that bombing hills isn't fun sometimes, but to me being able to pop some flip tricks and ollie onto curbs when I'm cruising across town is well worth the extra sketch factor when bombing hills.
pennys are sketchy. not fun to really ride to somewhere....fun to goof off in the street in your driveway or something.
a nice convex longerboard 30-36" long or so is my go to....gotta have drop through trucks or some of those "originals" so the board is nice and low....
If you can find the magic length where you can pump and its low.... its the best.
On a college campus, longboard is a must. Too many sidewalks and cracks for regular boards, and pennies, though nice and portable, aren't stable enough IMO. Plus there are board racks outside every building.