I just posted a review of a mom-light I bought a few weeks ago. It is the 600WS, lithium battery powered, wireless mono-light from Nice Photographic Products in China. The kit sells for about $350 or so depending on the model.
Here is the feature set:
LED modeling light
5.5 lbs.
320 full power shots on a full battery
6-hour recharge
5500K +/- 200K
variable power output
sync terminal
attachable handle
stand mount adaptor
Synopsis of the review: This is a very straight forward and easy to use monolight. It has a multi channel selector for the the low profile wireless module. It has a 5W LED modeling light, this is much brighter than you might think. There is a diffusion panel that comes with the reflector for a softer direct light. I found the recycling time to be reasonable at full power and quite fast at anything under half power.
This unit uses a knob to vary the power. It is not easy to find accurate increments, say from 1/4 power to 1/16th. It is best to use a flash meter and play with the adjustment.. I have no done a full field test with it yet, but the color looks right on.
My biggest concern is that there is no US distributor so service would require a return to China I suppose. As I just got it there is no way I can estimate its longevity. I'm taking the approach that for under $300 for a 600WS unit, it is an expensive disposable strobe if it dies on me.
There are lots of pictures posted on the review. Go to www.foto-gizmo.blogspot.com
if you are interested.

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