Another vote for egg beaters. They are the easiest to get in and out of, and are pretty much hassle free. Crank Brothers makes a number of different kinds, some have platforms and some don't. I haven't tried the ones with platforms, although I can see how they could be useful (i.e. I can see how they would be useful every time I ride my bike to the gym which is only a mile away, would be nice not to have to put on my bike shoes).