See also 700 MR backlight shield review. I purchased several of these for trade show lighting. They were fairly easy to assemble with the exception of attaching the switch to the lighting wire - this was a little more wiring than I had anticipated, but I succeeded and the lights turn on and off :). I did not give them a perfect rating because they seem a little delicate. We'll see how they do over a number of trade shows. They hang tight to the wall and are super light weight and telescope out 24" which was exactly what I was looking for. They are much easier to deal with than my last set of lights and I would highly recommend these to others.
I bought several of these lights for our indoor jewelry display booth last year. I am very satisfied with the lights and their versatility in where they can be mounted. We mount ours overhead on the frame of our booth display and they work great. I highly recommend them.