For a road bike, if you are going to ride it any distance make sure that you get the "Look" style pedals (the ones that are larger, oval-ish, shaped). They have a larger contact area so the stress of pedaling is distributed better then on SPD pedals. Also, for your shoes, make sure you get ones with 3 straps. 2 strap shoes work ok, but I have found that 3 strap ones hold my foot in much better on uphill climbs, when I'm pulling up on my pedals hard. Other then that it's basically up to preference. As of a year ago, the best pedals were made of carbon filled and the ones I got were filled with a type of plastic to reduce weight and while not as light or strong as the carbon filled ones, they got the job done just fine and were around $100(USD) IIRC, the carbon filled were closer to $200(USD) I think. A recommendation for shoes also, I don't know what you're looking for exactly, but I got my shoes from a company called "Sidi". I got their model called "Genius". They are leather on top and have a carbon fiber sole, they hardly weigh anything, but they weren't cheap. IIRC they were around $250(USD) which may sound like a lot but they are great shoes and the cheapest shoes you will likely find are going to run you around $100-$150(USD).
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