Yes I purchased, returned it and got another one. The first one I returned had no issue. It was exchanged because of a special offer by Nikon, but B&H had to exchange it because it was a kit (long story). Anyway, I'm on the 3rd one now with 306XXX serial number. No dirt issues with the sensors after 1500 shutter clicks. I'm meticulous now with cleaning contact points between lens and camera body.
In short, and as previously mentioned, the capabilities/features of this camera out weigh the dust.