I'd go with QBP (Quality Bike Products) cables. They're the generic and seem to actually work very well. Go with Stainless rather than non because that way they won't rust and don't bother with the teflon coated ones, it isn't worth a thing. As for housing, replace that when you do your cables and just get it from a local shop. If you don't know the difference between gear and brake housing, ask, it's a fast visual explanation. Make sure you cut your cables long then trim them to avoid having to buy more because they came out too short. Make sure you get the little end crimps so that you don't have your cables fray out and stab you. That being said, if your current cables are still in good shape, just reuse them. There's nothing special about dura ace cables (I left mine in the box). Dura ace housing is a bit lighter but that's because it's thinner and therefore wears out faster. Not worth it IMHO.