How much do they weigh?
Reps will usually be heavier, reps are for looks, originals tend to be for weight or aero as well as looks. Reps are cheaper because they are heavier (usually a different type of wheel construction). If it's a good quality rep, then reps are fine IMO if you're not doing drag racing. Not sure about those but if you post the weight, it might be able to determine by looking at the weight of the originals online, and then we can find if they are reps or not that way.