how many cc's till you're good?

I've heard people have different number of fills, some have 1 fill and are good while others need 6 or 7. My question is for those out there who have hit their "sweet spot", how many cc's did you have when you got there? I've had 5 fills and I'm at 7cc now, I have a 10 cc band. I had surgery 4 months ago and I still feel like I eat too much. The last 2 times I've gone for a fill my doctor has acted suprised that I'm not having more restriction. So of course this makes me nervous. If anyone has any words of wisdom that would be great! Thanks