Tapered leaders, monofilament and fluorocarbon tippet, and specialty leaders for Alaska. As a rule of thumb, don't use Trout Leaders to fish for salmon or steelhead. Or if you are casting large heavy streamers, a Salmon Steelhead Leader is your best bet.
Rio Salmon/Steelhead Leaders match up very well with Maxima Ultragreen Tippet or FC Sniper Fluorocarbon Tippet.
Rio Trout Leaders match up with Rio Powerflex Tippet or Rio Fluoroflex tippet.