Here are some thoughts on paint.....
I've painted my whole house, every room, from one time to another.(and my old house) I've used Behr, Valspar, BM, SW, and Glidden.
Behr (Home Depot): Thin, thin, thin. If you love a color, get it in BM or SW. I used the premium paint for my spare room (striped one) and it was just like using plain BM.
Valspar (Lowes): thin, thin, thin. I had to do FOUR coats of white to cover a pale blue in my bathroom. FOUR coats. I could understand if it had been a dark color I was trying to cover, but it was baby blue and I STILL see pieces of blue come through in places when I'm in my bathroom. Someday, maybe this summer, I'll do another coat of higher quality white paint. Thank GOD it was on a gift card!
Sherwin WilliamsW: I like Sherwin Williams, BUT it was actually a little too thick for me....
Glidden: A little thicker than Behr and I liked the way it covered in two coats. I did my bedroom in Glidden.
Benjamin Moore: Ahhhh, love it. I did my living room in BM. LOVED it. It was smooth, the roller and cutting brush strokes blended nicely and two coats covered evenly without looking thin or too thick.
My winner: BENJAMIN MOORE!
And, I don't really love the whole "primer built into the paint" trend that's going down these days. You can't beat a good caot of Kilz primer (oil based for wood projects and latex for regular wall work) followed by two even coats of paint. I hope that helps!
For the most part, paint finishes are dependent on the space you plan to paint! I tend to stick with eggshell or satin finishes for bedrooms, living rooms, and dining rooms. For the kitchen and bathroom, you want to stick to a semi-gloss or gloss finish so the wall is washable.