I have Shimano M324 pedals on both my bikes. These have the SPD clip on one side with a regular rat-trap pedal on the flip side. I have them set so loose that my foot pops out if I just turn it a bit.

I like the flip pedals because I can clip out if traffic is heavier, or if I'm on a family outing with kids. Right now I'm usually pulling a trailer, so I use the pedal side until we get to the trail then clip in once we don't have to worry about cars for a while.

They're also good if there's any chance you're going to have someone else using your bike. My husband uses my road bike when we both ride, he's just a couple inches taller but we have the same inseam. I don't think he will ever go clipless. This way we don't have to swap out the pedals each time he rides.