The X3 is a very well built product. I've had mine for about a year, while it is more expensive than many similar lights, I have no regrets about buying it. A couple of things to bring up…
Chilled came out with
the X6 mini earlier this year. It's the same price as the X3 but, to me, it's a much better buy. I would have bought the X6 mini instead of the X2 or X3 (I cheaped out and bought an X2 for veg). The PPFD map on the X6 is nothing short of amazing.
The Growcraft lights can be bought as DIY kits. That drops the price to $529 for the X3 and the X6 mini while the X2 price goes to $429. If you head over to cocoforcannabis.com or hit YouTube for a Mr. Grow It video, you can get a discount code that will knock off 5%. All told, an X6 mini for $500± is a steal.
The attached photo is the largest of the ≈2 dozen colas in my last grow in my 2' x 4' tent. Even though that's the largest, the rest of them were pretty similar in size. Yield was significant at 729 grams or 947 gm/m2.