Ditto on getting them on a 50% off coupon at Joann's. I just bought a small, battery operated LED Ott for taking to sew-in's (the light is kinda bad in one place that I go to) .
At home, though, I have bought the LED's at Costco to replace my bulbs in the fixtures I have that have 5 flexible necks on a stand. The switch lets you turn on 2 of the 5 heads, or the other 3, or all 5. I have the two pointed down at my machine area and cutting/ironing area. I love them because they are relatively bright, but stay cool.