waiting for a haight solid state ppf-800 led grow lamp

i have one of these on order:

here's the product detail from their website:
http://shop.haightsolidstate.com/Haight-Solid-State-PPF-800-LED-Grow-light-PPF-800.htm

Haight Solid State PPF-800 LED Grow light

180W LED Grow Light 
The ideal size for both vegetative growth and flowering of full sun loving plants 
Covers up to 4x4 ft
31 - 6W wide beam LEDs 
Red, blue and white LEDs for a complete full spectrum 
Separate High/Low power control for blue/white and red 
120V indoor use only 
15 x 20 x 1 inch 
3.5 lbs 

1 year limited warranty 
Designed in the USA 
Patent Pending 

The Haight Solid State grow lights use the latest LED technology to deliver outstanding growth performance. Plants use only a small portion of light from the sun. The measure of the light levels of the useful part of the spectrum for plants is called the "Photosynthetic Photon Flux" or PPF. Our PPF grow lights are thin, lightweight and have no fans.

The LEDs are 6W each - more than 4 times brighter than the Cree XB. The LEDs are automotive rated - the toughest rating for semiconductors. These are the only grow lights currently using this new generation of LEDs - they produce more light, penetrate deeper, and cost less.

The PPF-800 should be positioned 6-18 inches above the canopy. Closer than 6 inches can result in stunted growth during the vegetative stage but it is a good idea to move the lights closer (2-3 inches) during flowering.

The price is a bit high on the manufacturer's website, i ordered from greners.com where it was $420
http://www.greners.com/grow-lights/led-brand/haight-solid-state-ppf-800-led-grow-light.html

i am hoping to eliminate the 250 watt hps that has been in my veg area, and also to eliminate it's exhaust fan, as well as lower my electricity bill a bit, the wifey was a bit surprised at how high the last bill was, hmmm...