from Amsterdam, NY United States
Bought a pair of the 180's with the batteries and triggers. I'm a full time working pro. I shoot corporate, weddings, etc, etc. I've already shot lots of frames with these, indoors and out. The Cheetahs have been tested in real world conditions by me and are performing flawlessly. Shot with full sun, modifiers, bounced, etc.
The transmitters work great and being able to set the flash power remotely is awesome. Having multiple channels where I can run different flashes on different power settings is perfect.
Here are some observations:
The color balance is a touch cool. Easily warmed up with a 1/8 CTO, but that's being super picky. Maybe I'm influenced by some overly warm manufacturer's flashes? Most won't notice this.
I wish for a PC port on the transmitter.
The flash and the battery are not much bigger than a speed light and external battery. But the versatility and quality of light, especially through a modifier, is worlds better.