Cambridge Audio is a name that pops up on this side of the pond quite often. They have a new receiver coming out in Europe in January with a suggested price of about £600 so it should about fit into your price range. Must note that I have not actually listened to any of their products.
Here is a link to CA's official blog from which you can watch a short demo of the new receiver,
here is a link to the technical specs.
Just my 0.02c