I would highly, highly recommend you get the REGA Brio 3 over the Cambridge Audio integrated amp. I originally purchased a Cambridge Audio 540A V.2 and although it sounded good, it didn't sound significantly better than the "jack of all trades" Pioneer Elite receiver I replaced it with, so I returned it. I wanted a better sound/quality for the money, so I tried the Cambridge Audio 640 int. amp. and I still was not impressed, so I went with the REGA Brio 3 and I am still overwhelmed with how amazing it sounds. If you can live without the balance and tone controls, or the headphone jack, then the BRIO 3 is the best for the money that I heard bar none. You can read the reviews on it at www.audioreview.com and you will see how much better they are than the Cambridge's. The REGA is designed to be the best quality, best engineered int. amp money can buy.
As far as the CD player goes, I listened to the Rega Apollo with the Rega Brio 3 and it was astounding how good it sounded. I believe that there is something to be said for synergy with buying components from the same manufacturer, but the Apollo CD player is still getting rave reviews from people that have other int. amps. that aren't Rega. I briefly listened to a Cambridge Audio 640C CD player after listening to the Rega Apollo with the Rega Brio 3 and it just did not do anything that stood out to me. Granted, it sounded really good, but it didn't blow me away like the Rega Apollo did. I also listened to a much more expensive NAIM CD player on the Rega Brio 3 and it did not sound better than the Rega Apollo at all, I actually liked the Apollo better. With that said, I am without a CD player until I can afford an Apollo somehow because I listened to quite a few other players and it blew them all away. But if you have to stay under $1000, then I would consider a used Rega Jupiter 2000, or perhaps a Music Hall 25.2 because www.stereophile.com highly recommended it in one of their reviews.
I hope that helped!