A guy named Frank Glencairn, whom I think is in England somewhere, has gone and done what we've all thought about:
A shootout between five inexpensive LED sunguns.
(OK, so maybe the term "inexpensive" doesn't quite stretch to cover the Litepanels LP Micro, but I digress.)
The shootout is pretty well done, and even includes a video at the end. But you can look at the video right here:
Check it out, and a tip 'o the hat to Frank!