when i bought my b18c5 bottom end, it had no crank pulley

no big deal, easy enough to find another one but my question is should i just buy a honda pulley or should/would it be okay to buy an aftermarket such as AEM or Sk2?

i know that if i had the stock one, there would be no benefit of buying an aftermarket pulley but since its gonna cost me big bucks either way (even with my friend working at a dealership givin it to me with his discount) maybe i should look into aftermarket pulleys as well.

thoughts, comments, suggestions?

thanks