arb-just a metal bar and will last for the cars lifetime.
wishbones-the bushes can wear,become supple and perish/split.have a look at the bushes before you buy them.the balljoint (can be replaced separatly) can wear but you could feel for the play before you buy the wishbone.
driveshafts-the gaitors can perish/split but the actual joints vary.sometimes theyll last the life of the car whilst sometimes they can wear as early as 60,000/70,000 miles.
obviously high mileage and older parts will be more worn just check them before you buy. the only thing you cant really check is the driveshaft joints as there sealed by the gaitor and you would only notice a problem when there on the car.