"The future's uncertain and the END is always near"

That's why he's pimpin' me!

Howzit Dutch?

Life is too short to type anything twice.

Have not tried the units mentioned but would reject the first offering for "watering" down the watts
IMO, the power would be better spent providing more photons at 660nm.
Lots of red and blue will do, jus' fine.
Got some Jack Herrer under 660:460. They are very happy so far.

Commercial units.
Kessil's are way overpriced and most fleabay UFOs are crap.
I like the specs and thinking behind the Lumigrow.
Stra8outtaweed is using some interesting, and affordable lights too.
Look him up.

And, unless he's learned a lot recently, you can safely ignore any input from Khyberkitsune.

There's an interesting DIY light being built on a sister board right now.
Google for Emilya.

Wish I could be more help, brah.
The only useful advice I have for you is to avoid sellers that hype.
(It'll take at least 180W. of leds to outgrow a 400W HPS)
Skip sellers who are still searching for the "lost chord" of colors.
(Red and blue is all you need, plants are quite flexible about spectra.)
Spend the extra buck for quality.
(because cheap is cheap, TANSTAAFL)

That's 'bout the best I can do when this medicated.

Aloha,
Weeze