Once again, coaster anyone? If it was good enough for Kevin B it should be good enough for everyone(Watch the scenes where he slams to a stop)

I think the Pista comes with a flipflop because that is whats out there. Look around for non-flipflop hubs that take a fixed cog and lockring that are less than $30

Coaster brake is a great idea. Simplicity. Cheap. Built in brake. All the disadvantages of single speed and fixed gear rolled into one! ;)

I've been riding a single speed coaster brake exclusively for the last two weeks. I'm loving it. I did add a front caliper, however. I'm way too attached to front brake to give it up, use it almost exclusively. Just today, I did find how well two brakes work vs. one when a car made a abrupt right turn right in front of me.