I have campus pedals on my primary commuter, pinned platforms on my backup, and clips on my road bike that I sometimes use in the summer.
If I had to choose one it would be the campus pedals as they give me the most options. They allow me to use SPD for fair weather and recreational riding, and LL Bean boots in the wet.

The actual advantage of foot retention for my commute which is also 16 miles RT? For me its a wash, a little less effort to position the pedal for taking off, a little more effort clipping in. I set the retention level really low so clipping out takes no effort even if unexpected.