I had a dual tube 8' fluorescent light above my workbench. It drew 103.7 watts @119.3 vAC, and A LUX meter App on my phone placed just above worktable surface, revealed an average of 537LUX , I say average as it was jumping up and down about 60Lux around that 537 reading, continuously.
I was gifted 16 feet of warm white LED strip lights. I made a Doug fir 8' long C channel, painted it silver inside with high temp spray paint and installed 15' 6" of warm white self adhesive strip LEDs inside of it, the other 6 inches for the switch and dimmer controls.
I mounted it at the same height as the 8' fluoro tubes and aimed it down, and 527 lux steady, at 12.4vDC for 27 watts of consumption. At 12.8vDC the LEDs made over 537 lux for just over 29 watts and I can get over 640 lux at 14.7vDC from them for ~43 watts of consumption. The fluoro light radiates light not just straight down but 360 degrees, so the Lux meter on the wall 6 feet away 6 feet high would read lower with the LEDs opposed to the fluoro. I was measuring LUX at one point just over my workbench so the comparison is not really fair to the fluoro's.
I no longer have a dual tube fluoro light over my workbench. No more flicker, no more buzz, no more worry about broken tubes and mercury vapor. All for about 1/4 the power draw for just about the same amount of a more pleasant color light on my workbench. I Feed the LEDs 12v DC battery power through a voltage bucker/reducing converter with fingertwist potentiometer/dimmer, which is only 94% efficient at best, but reducing voltage allows me to dim them smoothly all the way to tiny pinpoints of light and a wattage so low I can't measure it. I put a RGB LED light strip in between the warm white LEDS and can greatly exceed the light reaching the table compared to the fluoro's on the whiter shades available, and I can add 16 more feet of warm white LEDS to the sides of the C channel if more light was required off to teh sides and below, which is unlikely to occur in my application/requirement.
Cool white LEds make more light for the same wattage compared to warm white, and would be closer to the same color as fluoro lights, since it is obvious people will always believe 'whiter' light is always brighter than light with more yellow in it., or just plain prefer it as more 'modern'.
One can acquire 33 feet/ 10 meters of cool or warm white LEd strip lights, withAC/DC powersupply, for about 35$. One could simply peel off the 3M adhesive backing paper and adhere them to the fluoro housings for quick and dirty result.