Imo spectrum king makes a great light. If you are considering building your own, it will probably be a move backwards though. Building your own allows you to customize it for exactly your space. For the price of an sk600 you could build a far better light using COB or quantum boards, or both! Being able to spread that intensity over your entire canopy is very beneficial and with your light sources being modular it gives you the flexibility to dial the spectrum in to your liking. You can also incorperate monos to compliment your main light source. For instance, a channel of far reds and one of far blues that you can alternate running between veg and bloom. It may be something you have to build up to, but a diy build will allow you to modify as you go. If you feel you can build your own light, i say go for it. Some people just dont even want to consider it. For the, spectrum king is on my list of suggested lights, though not the top. Pacific light concepts and horticulture lighting group have some top notch rigs and both of their owners are members of this forum! As is cob kits if you are considering diy.