I've got both the cb-5's and cc-10. They are nice, but if your budget for a 5.0 is $700, you could do better. You can get 2 cb-5's for $100 on Amazon right now (they can be had for around $80 on sale) and you can find the cc-10 for $200 or less if you catch them on sale. That puts you at $400. It's a good set up, but if you want to stay with Energy and upgraded your fronts to cb-10's or cb-20's, it would most likely sound better...but they are larger bookshelfs. I haven't heard either the 10's or 20's, but I assume they sound better than the cb-5's and would still match your cc-10.