Pedal choice is a highly personal issue I've noticed. When out riding with a bunch of cyclists, you rarely find any two sets of pedals or shoes the same.
Currently, I am using Shimano PDR-600's (about £60) and Diadora ALU shoes (about £90) on my bestest bike, but on my other two road frames I actually use the Shimano M515 MTB pedals (about £30) and some bog-standard MTB shoes (they are a hell of a lot easier to walk in when you get off the bike).
I like the PDR600's because they have a very wide platform and a decent float so you can get the power down easily, but the MTB pedal & shoe combo works equally well if you are just tootling round and actually get off the bike now and again.