|
What AndrewJ said is exactly it.
Another thing too, most shoes that fit the SPD pedals will look more like normal shoes because the people who use SPD pedals the most are mountain bikers who often have to get off their bike and carry their bike up stairs or if they fall they need to walk in mud so they are easy to get in and out of and easier to walk in but they are not designed for prolonged riding like a road cyclist might do.
The LOOK style pedals will generally fit on shoes that look like those low cut "track style" shoes that you see people like lance armstrong or any other professional endurance cyclist wearing. They are designed to be as stiff as possible to provide maximum comfort and the best power transfer from your foot to the pedal as possible while being as light as possible.
It is really up to personal preference which you like the best. I know road cyclist who swear by the SPD pedals and say they are perfectly comfortable with them for 100+ mile rides. You really just need to find a bike shop that will allow you to get on a test bike with each and see which you like more. But in general, picking out the shoe is the easy part because the clip that goes on the bottom of the shoe comes with the pedals and then they bolt onto the bottom of whatever shoe you got (except in rare cases where the shoe doesn't have the right bolt pattern but I know that the road style, low cut shoe usually fits both SPD and LOOK style cleats).
__________________
|