Heavy wire baits will last longer. Because they give you the best of both worlds - vibration and durabilty. They also cost about twice as much, but well worth it as vibration decidely improves your baits effectiveness. Tinned music wire has also been used when vibration is of absolute importance, but to a much lesser degree than stainless and titanium. If you are tired of mangled spinnerbaits, try looking for a heavy wire bait.
Baits designed for pike and muskie usually have sturdy frames that last longer.
I recommend trying the titanium frame baits - they catch fish with the best of them and last a lot longer, more than making up for the higher price tag. If you use a leader or snap swivel, the Twist-eye is your best option. The closed eye will keep your snap in place and prevent it from running up the shaft. Pike and Muskie angles generally prefer this style frame. The R-bend is prefered by bass anglers who tie directly onto the bait.