+1 on the PD-M540. Although as TurbineBlade mentioned, they're all easy once you get used to them. Some have tension adjustments, some don't. The Speedplay Frogs look nice too. But for the money, and just commuting, SPD's can't be beat...PD-520's can be had for <1/2 the price of the cheapest Speedplays and they'll last and last. Pair them up with a nice walkable cycling shoe and you're set.