I liked LS-120s because they were IDE and the last generation or two of PC mainboards with a real floppy controller, the controller, or the BIOS, only supported one drive.
So with the LS-120, you could have a Phenom II with the same 3.5/5.25 dual-floppy capability as your old 386SX.
Bought like four of them in external cases from my university's sale-of-scrap-goods dealer. They're just IDE units with a little adapter board to either USB or some weird propriatery connector.
Years ago I longed for an LS-120 but by the time I had the money a CD writer was the better deal. I occasionally look at eBay for LS-120s just for fun but I now have a new unicorn to search for and one that didn't even come out in the US - the LS-240. Thank you for a new bit of nostalgia!