If you wanna nitpick, technically number ten is the only one that really counts since all the other deaths were either alternate versions/visions or otherwise handwaved away by the reset button. She was dead in that 800 years in the future, it's safe to say.
But out of all of them, #5 is nice in both it's absurdity and acting. The doctor just calmly explaining that euthanizing her is the humane thing to do all while Janeway's reaction is a slow buildup of panic. Great acting on both Picardo and Mulgrew's part.