As a rule, I prefer not to patronize Amazon for anything because of who owns it and... If the seller don't say what SMD's are used, you can bet they aren't CREE. Interestingly, even Harbor Freight's 'Roadshock' series of lights and bar lights are all CREE SMD's and HF states that in their ad blurbs. I think the trade name 'Roadshock' sounds kind of stupid but I didn't dream it up.
Electricity use, LED versus fluorescent in my shop is inconsequential. My machine tools and welders pull a heck of a lot more power and are usually running every day.