I started commuting 3 weeks ago. I found myself buying new pedals 2 weeks ago. Whacked my left one down on a curb my first week and destroyed it (the axle of the pedal sort of ripped through the surrounding plastic). My LBS had a very large selection of pedals.. quite overwhelming.
I've got big feet and I am a somewhat heavy person, so I went with large platform pedals. They had a pair made by Kona ("Jack****") that was on sale for $7 for the set. I picked those up and I am quite pleased with them..
Looks very much like the "Primo" pictured above. Swear filter prevented me from linking to an actual picture of mine since the URL contained "Jack****" in it and was replaced with *'s