I got the Impact OctaCool 9 from Amazon a little while ago. It's a good CFL unit that's lightweight, puts out decent light, and has two diffusers for nice soft light. The drawbacks are the clips holding the inner diffuser are a pain to use, the reflector material is single stitched (might not hold too long), and the whole umbrella setup is tough to assemble. I just leave it assembled to get around that. Here's a video I put together for it.