06 was the facelift, they changed the shape of the opening in the front bumper so the car looks like its smiling at you

and the also changed the angles of the grills either side of the renault badge on the front bumper, also changed the headlights slightly.
I have a 07 plate CC dynamique and the standard spec on mine is Climate control, Auto wipers and Headlights, Cruise controll and speed limiter, 17 inch 7 spoke alloys. some can even come with the 6 CD auto changer in the dash, this was an option that some people bought, also u may be luckly and find one with the "TUNE POINT" which is an MP3, Ipod and usb connection thats in the glove box, mine has this

its great, no need for CDs in the car, just my ipod with 1500 songs to flick though!!

Engine wise, if you want petrol then go for the 1.6 16v with 111bhp, the 2.0 has 130bhp and isnt that much quicker so it isnt worth the extra 20 bhp for dearer road tax, heavier fuel consuption and dearer insurance.
Diesels you have the 1.5 dci, which is very ecomomical and 106 bhp or you have the 1.9dci 120 or 130bhp they can be flyers!!
Mine is a 1.6 16v , its fairly nippy, does and average of 34 mpg, sat at 70 on the motorway will do 40+ mpg.
what area do you live in, my brother is sales manager for renault at gemini retail park in warrington in the north west and they have the CCs on offer at the min!