Well yes, and
- sound as such is not the first and foremost feature of such devices because their "home centers"
- you are locked into an ecosystem *anyway*, so its not really much of a choice (I for example, get a "we're not in your country yet" page for Google Max. pointless)
- apple out of the bunch has the most promising design anyway, since Sonos One is a single 2-way speaker, and Google Max is a dual 2-way speaker, and from a technical perspective the only pushing the envelope. Are the other two as easily expandable to true stereo? (I don't know - valid option)
- HomePod is a woofer + 7-way tweeter array with some smart mumbojumbo positioning going on. It's also designed to be used in a pair. IF sound quality is the main concern, this is not something to be overlooked.
HomePod has a lot more manoeuvring space to adapt its sound to environment, while other two do not. Testing it would only be fair if you tested it out in various environments as well (you know, real-life applicability)
I'm not even defending apple, I personally think cramming all that into a speaker (And sell speaker in a *single unit* all together) is stupid AF. Give me a brain and an aux connection of a homepod and i'll connect my own speakers , thank you. Oh wait, i have an iphone. *shrugs*