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You can stick 4 speedlights into one of the new Lastolite Ezybox II modifiers. Very portable, but quite expensive, especially if it blows over.
@Gregg Heckler: Made in China doesn't always equate to poor reliability. Canon and Nikon have gear made in a variety of locations, including China, and they (usually) work great.
The CL-180 that's sold by Cheetah doesn't sport the advanced features of a Qflash, but it's dead easy to use and gets the job done as long as a lot of power isn't needed. The color temp of the flash varies about 150 degrees throughout the power range. Cheetah modifiers are a different story, producing a color temp around 6600, compared with 5500 with Lastolite modifiers on the same CL-180. This has been reported to Cheetah, and I think they're trying to find a different source for their diffusion fabric. Custom WB, of course, solves the problem. YMMV.