Thanks for your confidence and kind words Amber, much appreciated. I'm generally not a fan of sheen paint for walls, and really only use it for protection or a decorative effect. It highlights imperfection, throws too much light around (espcially in an area of your size, and with the long views it provides, it could create a vegas like atmosphere), and becomes an attraction unto itself, as opposed to simply being a backdrop/canvas for your decor. I don't think sheens are as warm as flats either, imo. You certainly need the protection, especially with the terror twins. If it was a small room where the dynamic duo were bouncing from one wall to the next, a satin might be necessary. But, in a large room I think a matte finish, which is washable, would suffice, and put an eggshell in the kitchen (smaller room, closer contact with walls). Ben Moore makes a nice matte finish, which would have a definite slight angular sheen, but much less than satin, which is one step higher than eggshell. Or, and I'm going to get flamed for this, I like Behr flat enamel, though some people don't know how to use it. For trim flat is a definite no-no. My go to for trim is usually satin as I'm a long time BM Satin Impervo (oil) junkie. The latex Impervo is a real nice finish. And I use semi and gloss from time to time, but I generally don't like too much of a sheen jump between the walls and trim. I like subtle distinctions, except as stated, when looking for decorative effect. Thanks again, good luck.
Now I gotta get ready for Chrisn, he'll be by soon:laughing:, someone mentioned Behr, and he's got a nose like a bear for Behr.