Another option would be to go with a combined clipless platform solution such as the Time ATAC Z-Control or Crank Brothers Mallet C.



The downside to these pedals is that they're relatively heavy and the clipless bindings do stick up above the platform so they're not totally unobtrusive for pure street shoes. There is one pedal called the Quickstep from Atom Labs that claims to have a lower strength spring on the bindings thus the claws retract with less force so should be more comfortable to use with regular shoes.



All these pedals are in the $100 - $120 pricerange.