We have a couple of the task lights that we use for bedside reading lamps. They are heavy and very well built. They were not inexpensive, but I'm sure they will outlive me and I'm planning on being around for quite a while yet!
I have the dual light shown on the intro page in bronze, and it's a little over 7 years old. It gets fairly heavy use. I've never had any problems and haven't had to replace either bulb yet. Great for reading and knitting. It does get warm, though. Lori is right, though, these lights are pricey but I feel they are worth it.