Hid lights or led

Which lights are better hid or led?

Neither is better. You can grow decent weed with either. LEDs use less electricity and typically produce less heat. HID's are cheaper watt for watt and have decades of proven use. LEDs are the latest craze but you need to spend the money on decent equipment. Those cheap LEDs claiming to replace 1000 watt HID's are usually garbage and do not replace what they claim.