Since I had lots of time last year, I tried my hand at building one. I built a frame around a drop-in 2'X4' LED panel from SuperBrightLEDs. After a few iterations, it came out like this.
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The frame is made from crown molding with a shelf made out of quarter-round molding on the inside, so basically you surface-mount the frame then drop in the light (or feed it up through the bottom like I did). The light is both dimmable and color-adjustable from 3000K to 5000K. It looks more like furniture and less commercial, and 2'X4' is plenty to light the whole surface without shadows. Here are some more pictures.
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The last two images are 5000K and 3000K, respectively. My phone does some color adjustment to the photos and 3000K looks more like 5000K and vice-versa, but you can see the difference color temperature makes. The light cost me about $100 and the supplies for the frame cost me about $100 (but you can make a frame for less than half that, I just wanted the fancy pattern).