FX1 actually draws 170w...
Draw is how much it uses, not outputs.
And as for the 357 Magnum..
Getting 357w out of 180w? Impossible. That's the 2nd company I've seen pushing that crap. Panel may be 357w "full specs", but what are the led's actually set for? Using 100 3w Cree's which max out at 1000mA, but setting at 700mA, doesn't equal a 300w fixture.. more like 200w (or so).
So if you take the 180w it needs to run, and apply the 15% rule, that panel's really somewheres around 150w. 15% is what drivers such as "Mean Well" boast.. 85% efficiency.
150w of LED replacing 1000w of HID?? LOL! Target more for 75 - 90% of what you were using for HID.. otherwise you'll be disappointed.
It's misleading advertising like this that's screwing this technology, making so nobody trusts it.
Cheers........