Looking to build a LED for 4x8

I'm a bit out of the loop on LEDs.. The last LED I built was on LEDgardner samsung strips for a 2x4 tent. Are there currently new strips that are out that are more efficient and cheaper now? My last strips were SI-B8V521560WW from digi.

Looking to build a new one for a 4x8. Growing in coco/perlite or possibly hempy. Going to keep my 2x4 for clones/vegging for perpetual grow. If u have a better solution let me know! My budget is around $800-$1k.
 
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