I don't want to start a Nikon vs Minolta conversation, just want to tell my experience. I moved from Minolta to Nikon about two years ago.
Before buying my F90x I had the opportunity to play around with the Minolta 7 (Maxuum 7) which is a fine camera, packed with very attractive features, but it has two weak points where F90x is superior, in my opinion.
I owned previously Minolta gear, and I had build quality problems with nearly all of the lenses. All of them had a real bad play (the inner barel, which moves when focusing). Than the rotatitn filter thread, no way to mount the lens reversed, as it lacks of aperture ring.
I knew that Nikon lenses are really good, and backward compatible, so there was no contest on this front.
The other was the Minolta 7 build quality. If the camera wasn't made out of plastic I was about to buy it, even if the Nikon lenses were better. But it was plastic, no rubber covering, no metal shell. The F90x is rubberized plastic on a metal shell, and feels much better.