The new cordless 2-in-1 stick vac actually is fairly quiet on the low setting.
There are a few drawbacks. Like it's not that powerful on the low setting so might take a few passes (and lifting it a bit) for bigger particles like tracked paper litter, the canister fills up fairly quickly with cat hair, and the filter might be harder to clean + no replacement filters on sale because Kmart. No upholstery attachment, only one crevice tool with brush.
But it's a lot easier to use, folds down small, the handheld pops out easily and the sound is not too bothersome to Melbcat. Alright for quick cleans.