I was designing a bedroom on a budget for one of my clients who wanted a "kid and dog friendly" bedroom. I suggested going with a patterned duvet cover that's easier to wash than a comforter. The pattern looks like a design from pricier pottery barn and low enough in cost in the event that it needs to be replaced. I ordered the king size duvet set for a queen bed because the bed was high. I bought king size pillows to fit the duvet shams. My client and I were both very happy with the outcome! This set even comes with extra decorative pillows. 
Please Note: The headboard in these pictures was designed and built by The Lazarus Wood Project, a business based out of Emmaus, PA lazaruswp.com