I'd agree with the OEM wires, unless they are expensive.
Also, I'm pretty sure that your car has the coil-on-plug setup, where the ignition coils are pretty much right on top of the spark plugs (well, 2 coils right on top of two of the plugs, with short wires to the other two plugs). In that case, unless your wires are actually bad, there's very little benefit to upgrading them.