I'll go one step farther and say which stem program works best depends on your goal. This thread is based on stem separation for bass and IMHO that is not the main goal for a single sound separation for many people. Separating the vocal I would surmise is the main goal for many and the free Ultimate Vocal Remover does an excellent job on that task.
YMMV


Back in my day the only time we started panic buying was when the bartender shouted "last call"!

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware