Best Jayce Build?

Don't get IE if you aren't getting more crit. Way to expensive to be worth it.

I go Manamune, BC, DD, CDR boots, Maw, and situational last item (personal fave is frozen mallet)

I haven't played him in a while, but I was partial to:

or this:

Enough armor penetration and AD to burst targets and the durability to actually jump into fights and make use of hammer form without immediately dying.