Yes, APS-C. That is Nikon's new Expeed or something sensor right? I have heard great things about it.
I shoot Olympus. The E-3, weather-proof pro-grade body. Honestly way to heavy for lugging around on hikes, which is most of my photography hobby. But, alas, I am in love with Oly's colors OOB. Just picked up Olys Pro lens 12-60 (24-120 35mm eqv)