Hey Mate,
Always depending on the money you're willing to spend.
Spider Farmer/ Mars Hydro for the lower price Segment.
Sanlight or Lumatek for the high price Segment. They all do their job,, but you have to have a check for yourself to decide what would e the best for your Site.
Personally I suggest Sanlight.
Q6W 2nd Generation is a beast.
Shoot a P.M. if you wanna talk more. I'll answer as soon as I can.
Cheerz
OimRausch
Good luck for your Projects.