I wanted to get Carbon Silver, but it seems to be everyone's choice that I have spoken to, even my bro is getting CS. I opted for the Brilliant Silver in the end.
Since getting my car I have done ~2300km's, avg 9.9L/100km's, with a good combination of hard driving and extended highway driving. I usually fill up after doing about 600km's or so (approx 60L), 60 x ~1.40 (98 octane) = approx $84 each fill. I've been doing around 400km's a week so $84 lasts me 1.5 weeks or $56 a week.
IMO fuel is never an issue, if your spending around 70k on a car and you worry about an extra $10 a week fuel you shouldn't be buying it in the first place. The fuel all depends on how you drive it, if you drive it like a 4 cyl Mazda, you'll get around the consumption of the Mazda, if you like to put on the gas and test your 0-100 times at each set of lights then your gonna chew through the petrol.
