I had a 527 American in .223, and sold it. It was a beautiful rifle, with one of the sweetest triggers I've ever had.
Believe it or not, I sold it because it almost got boring to shoot. Using cheap Walmart ammo and a fair to medium quality scope, anything any bigger than a peppermint patty was pretty much toast inside 100 yards.
If near perfection out of a box is what you seek, the CZ 527 is your grail.