Panaracer Pasela Clincher - 622 - black

They roll easily, look great, have mad grip, and seriously, nothing at this price comes close. Perfect if you want to try wider tires or slicks instead of knobbies, but aren't sure yet if you'd be willing to invest more.
Be warned though: these are fragile tires, so not for rough and tough urban use. I toured with them and road them on mixed terrain, and they proved to be excellent, grippy even in slightly muddy/wet conditions, and surprisingly: had no flats. They were a bit uneven, and the sidewalls/tire beads started giving up, but again: at this price, well worth it.