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My favorite dueling build, Bork gives lots of damage and sustain, Cleaver gives health which stops you from getting bursted as easily, and armor shred for more damage, especially against tanks. Crit/attackspeed item depends whether you need waveclear (and burst, this is if you decide to start roaming) or dueling potential. Maw is against an AP threat (although if you're laning against AP you should get an early Hexdrinker, as always), IE for more damage. Guardian Angel to finish off thebuild, also replaceable by a tank item or Maw if you didn't get that.
While not as bursty as Lethality, the sustain, health, and CDR means you not only still do plenty of damage against them, you also are much less susceptable to being bursted instantly. The early armor shred and %onhit means this is great against tanks and juggernauts, although you may not do much damage until 2nd item (but you wouldn't with flat AD/Lethality anyway).
You're not as good at picking off carries, but you do plenty of damage (especially if you decide to skip BC or Bork for earlier crit/IE) and sitll pose a major threat (by fourth item you do as much DPS as a standard ADC)