Has anyone used the cheaper Bescor on-camera lights like this one-->
http://www.bhphotovideo.com/bnh/controller/home?O=productlist&A=details&Q=&sku=4500&is=REG&addedTroughType=categoryNavigation

It appears to be a good light because of the diffusion filter, vertical barndoors, battery pack, etc. I even like the 50w/100w interchangeability when using either the battery power (50w) or AC power (100w). I am skeptical though because of the low price compared to the more frequently recommended Frezzi, NRG, and Paglight. Would I be wasting my money if I bought this light, instead of going the extra mile and buying one of the others for a whole lot more? (I am on a very low budget)

I have one that I've been using for about 4 years. I also have the belt pack battery for it-run about 2.5 hours with that. I made a softbox for it and it kncks down the available lighting to about 20-25W which puts it right with my Anton Bauer light but give me the 50W when I need it. Although I don't use it much anymore (I'm using the AB on my full size cam and only use it when shooting my 150s-not as often anymore) but for the money I have been very happy with the unit. The juice box it comes with will only go about 75 to 90 minutes but it works fine. Some will say don't buy unless you can buy the Frezzi or Pag but you can't spend what you don't have and frankly even when you have the money for the Frezzi or whatever you decide on, its nice to have a backup just in case. Things have a funny way of breaking when you least expect it.
Don

Thanks Don, I probably will buy that light kit as something to start with, and maybe move up later on.