The OP said he was looking for a "new" Nikon camera, meaning something that is current - and obviously "new" and not used. Why are you guys pushing a D90 on him? This is a discontinued/replaced camera! The only advantage that a D90 has over a D5100, is the in-body focus motor, that is it! Everything else spec wise, the 5100 beats the D90. Saying that a D90 is more robust is a bit of a stretch as well. A D90 would make a gret secondary camera. But with the likes of the D5100, D7000 and even the D3200, why would he buy a discontinued camera as a primary camera? I really don't understand why you are pushing a discontinued camera on this guy when there are quite a few current models that a far better.
Not that I want to take anything away from the point you're making but surprisingly the D90 is not a discontinued camera and Nikon is still plugging away making more of them. I don't own a D90 nor have I ever shot one but given that people are still buying this camera given all the fine options out there really speaks to what a great camera this model must be.