My husband and I have used Behr paint to decorate all the rooms in our house. Behr offers a HUGE selection of colors and finishes (and the ability to custom-match any color by bringing a 2" sample to any Home Depot store). We tend to favor the eggshell finish, which is more forgiving of our 80-year old home's imperfections. Although it's relatively inexpensive compared to most other brands, this paint's coverage is fantastic! We even used it to cover the hideous reddish-purple hue used on some woodwork by my home's last owner. It covered beautifully! The paint is easy to apply with brushes and/or rollers....it's not too thick or gloppy, or too thin and runny.
For me, the best part is that I can wash this paint as needed without washing away the color. The paint stands up very well to the abuses doled out by my family too. No chipping, fading or signs of wear.