We just painted our family room with the Sherman Williams Harmony, no VOC, and it worked very, very well. It was the only one that was locally available, most stores had no idea what I was talking about. I will continue to use this on the rest of our beige house. You can buy quart samples for $5 each. They will color match to any chip/item that your heart desires.
Anyhow, my husband was very pleased with the coverage, viscosity, and workability. The man at the store said all but the darkest color on my sample sheet could be replicated without VOC's, and that was extremely dark. They also gave me a large discount since I got nine gallons, 25% off and a coupon for next time for 15% off. We also did a sage green with a darker accent wall, very sooooothing.
As far as cleaning, I've gently used the Magic Eraser on a couple spots/marks, and it worked well. I think it cleans up the same as the Behr brand that we put in the mud room. Finally, it depends on what finish you want, we got the eggshell which does not clean as well as the higher shine's, like semi-gloss, but we don't like the look of the semi-gloss on the walls of the family room.