The main carbohydrates I eat when dieting (and year round for that matter) are oatmeal, brown rice, sweet potato and regular potato, plain rice cakes and carbohydrate powders like waxy maize.
I am celiac so I can not eat wheat because I am allergic to the gluten protein in it. I find that most people who aren't celiac that switch to a gluten free diet find an improvement in their digestion and regularity. Wheat is extremely inflammatory in the body and not the best choice when it comes to carbohydrates.