I've used a paperback-size Light Wedge for years and love it. However, when I first used the Lumos, I found the light to be very dim. Before throwing the thing away, I checked the manufacturer's web site. It said that if one of the batteries is facing the wrong direction, the light will work, but it will be very dim. I thought I had been very careful in loading the batteries, but what do you know, one of them was facing the wrong way. Once that was fixed, the thing lit up much brighter. I almost wish it had two settings like the smaller model so I could dim it. The only negative is the inevitable scratches (which I don't even notice once I'm reading). I don't mind lifting the light up to turn pages. Once you get used to it, it's no problem at all. The even coverage of light on the page is so much better than the clip-on light I had been using for hardcover reading. And the price is a steal.