The 19" one is the first halfway-reasonably priced one I’ve found in a couple of months of looking, to replace our existing dual-Circline kitchen fixtures.
It’s both large enough to cover the ceiling area scuffed up by the existing fixtures, and has enough lumens (2,000), which is extremely hard to find in an LED fixture.
I’m really looking forward to not having to find any more expensive ballasts for the fluorescent fixtures they’re replacing (one of them’s starting to flicker now).
Also, figuring out whether it’s the bulb or ballast or both was never fun.
I’m very hopeful these will outlast me, and I’ll never have to mess with them again.