Thanks to all the reviews on booklights out there I went with the mighty bright xtraflex2.  I can say without a doubt that this is a great light.  Very sturdy yet lightweight.  I love that it has two light settings and a very sturdy clip.  I have been using it on paperback to study at night while my 3 month old is asleep.  Haven't woken her up yet and I can read with no eye straining.