What is a daily calorie limit I should be aiming at?

My group says 1200 per day 300 for breakfast, 400 for lunch 500 for dinner , with total of 60-70 grams of protein a day

I have read so much literature about this topic and there doesn't seem to be a right answer, I personally feel that 800 is really low, especially for a 6'1, 31 yo Male. So I have been sticking to about 1100-1200 a day, I feel pretty satisfied between meals and rarely feel like I need a snack. So I think the answer is if you don't feel satisfied or "well" then you should probably up your calories per day. I have been using myfitnesspal on my iphone religiously and I am really loving the app. Helps me stay on top of things and has basically every food you can imagine.

My nutritionist says 900-1000. And to aim for 300 calorie meals and a 100 calorie snack if needed.