I've finally gone carbon. (Scott hard tail MTB) But I didn't buy cleats when I bought the bike, as I already broke the bank by going over budget and was overwhelmed by the choices in cleats. My past bikes I've just gone with the standard middle of the road Shimano cleats. I need new cleats. Seen Crank Bros, Shimano, and Look (Which I havn't seen since the 90s as a brand). What does one look for in a cleat system? I ride twice a week off road, mainly jeep track and getting into single track. Please some advice.