A year or so back I replaced the fluorescent double 4-footers with the Harbor Freight double LED-tube units @ $18.99 per fixture.
9 fixtures in a 30x40 shop.
Nearly doubled the light, apples to apples comparison.
Mine are about 9 ft above floor, and most of the walls & ceiling are white, FWIW.
LED shop fixtures are getting better & seemingly cheaper.
Usually 1/2 wattage of flour bulbs.
Wiring less critical wrt total wattage, so no need for electrician to get invloved,
Unless you're really concerned about foot-candles/lumens at surfaces.
Much lighter in weight then any flour fixtures.
Hang with small link-chains to desired height.
Instant start-on & even in colder temps.
Easy to string together with plugs/sockets both ends.
Good flour bulbs are getting harder to find.
Cheaper ones don't last long if switched frequently.
I found that had to get use to the "light color",
appears to "harsh" at first use.