quantum boards recommendations

hi guys i am looking in to qb for a 4x4 area, currently using 600w hps but i need some recommendations for a qb that will cover a 4x4 for flower that is going to cost me alot less in electric but same performance or better. there seems to be to much info out there and i cant get my brain around them. i dont want to build 1 i need 1 pre installed ready to go. by the way im in the uk.

thanks again

https://www.diyleduk.co.uk/
A UK Genuine seller of HGL kit plus his own custom strip builds. Builds are stunning. Responds to emails/questions and has time to work out a solution to suite.
Also has his own subforum on uk420.

The best value are in the kit form but diyled will assemble them for free for you. Not that its hard, its a couple of screws and a plug.

You wont be saving huge amounts on electricity. I saved a bit, not that I count my electric bill, I used to run 1.5x 600w hps over 4x4 (3x 600w over 8x4) so I swapped one side for two 260w kits. So swapped 900w for 520w.
But your looking at 520w vs 600w, the 520w pisses all over 1 600w hps.
At the wall it will be 570w for the QBs vs around 660w for the HPS, give or take a few watts because different ballasts are more or less efficient.

Other options are 400w of strips. That would be around equal to 600w of hps, saves a bit more electricity gets same yield ish.
A HLG550 , USA only (horticultural lighting group) A bit expensive.
A HLG600 from growers lights (USA) Similar wattage (to the HPS) higher yield, tiny saving on electricity. Better value than 550 IMO.

Cant really beat the double 260w kits from diyled.co.uk, More yield, slight saving in power cost.
No taxes to pay from importing and cheaper deliver cost. Plus he can be contacted on here if advise is needed.
Plus with two lights instead of one big one you can adjust, lower or raise for better coverage.

Try invisiblesunled uk

From the UK as well, Im starting my first grow and I bought Quantum Board from these guys, had to assemble myself but it was easy, questions I had were answered in minutes. QB LED is awesome, Im only doing a 2x2ft grow so I got a 135W lm301b.
I still need a Carbon filter and fan, any recommendations?

The new QB96 Elites are worth looking at. 4 in a 4x4 would be intense.

The Triple heat sink with 3 qb288 kits are badass too..

I also have a 600W kit, it is a fantastic light for a 4x4. More affordable than the HLG550, which is a badass light too, the 550 was on sale for $800 in October

If you order from growers lights they have a cheap option to build the kits for you, just not sure about shipping to europe.