About 8-10 years ago I bought a set of those solar LED yard lights...you know, the ones people light their sidewalks with...yeah, what a joke...I took them right back...a single birthday candle put off more light...not kidding.
I may have missed it but I've have good success with Barrina LED T5 Amazon has them for ~$8 each, they were cheap enough I bought 12 when I only needed 6. I put the extras aside for when I need them or I'll put them in my shop when I get around to it.
I got the 4' one. couple guys I know like them. I planned to get one every week or so and replace my fluorescents. Last Saturday, I had time on my hands and some Menards rebate cards burning a hole in my pocket, so I went shopping the last day of they 11% sale. Found they have a basic LED light (3300 lumens?) for $19.97. I bought four, taking into account the additional discount. I replaced four of my old lights in my shop. Made a nice difference, and are less than the RK units. My RK test and evaluation unit sits above my chainsaw sharpening work space.