I've posted too much on this thread....my last shot. DG, you really can't go overly wrong too much with whatever clipless you choose. Given that you're not hardcore, beat your buddies, take no prisoners, etc....go with SPD for the road. Given the versatility of being able to walk around more easily at restaurants, etc., and that you already have spd shoes, and that we're talking oranges and grapefruit here, not oranges and oysters...........go spd.

And if you don't like 'em...well, those are just the dues you eventually pay in an equipment intensive past-time. Most of us have garages littered with disappointing purchases. Ask me about Brooks saddles, Ritchey anatomics, etc.

I feel safer attached to the pedal in many ways. Riding simple platforms a few years ago on my neighborhood bike, I hit a bump, my foot bounced off the pedal, my nards it the top tube and the pedal came 'round and chewed on my ankle. Nothing's simple or guaranteed....except people who switch to clipless 95 percent seem happy.