I'll be the first person to tell someone to just grow up and buy a nice Dyson rather than settle for a cheaper cordless vacuum. Yes, the Dyson purchase probably requires extra saving up, and yes, I acknowledge that a vacuum costing the same (or more) than a month's rent puts it in the "overpriced" category. But if you can swing it, I think a Dyson stick vacuum is worth it.
And this is simply because my Dyson with a laser does such a good job that it makes me prefer doing the chore manually. If a robot vacuum does a crappy job of cleaning a hard floor, my Dyson V12 Detect Slim will snitch immediately, using its green laser to highlight any leftover hairs or specks that a robot vacuum missed. It's still clutch to be able to rely on a robot vacuum for surface-level jobs in a pinch, but for b