Sonos Move (see image) is portable, whereas the Five isn't.
#Note: Find full Sonos review list at the bottom.
If I were stranded on an island, Sonos Five would be the first thing I'd bring with me. Oxygen and food would be second and third.
As you can also see in my Best Sonos Speakers article, Sonos Five is my top pick.
In summary, the sound quality isn't comparable at all. The decision is simple: Unless you need portability, get the Five. Otherwise, get the Move.
At this price range, you might should also think of getting two pieces of One's. In that case, you can take a look at my 1 x Five vs 2 x One article.
Quick links:
Also see the Sonos' very own speaker recommender at sonos.com/en-us/sonos-recommender.
Sound Quality
Let me tell you something right off the bat.
The sound quality performance you'll end up getting from a speaker will always depend on your room acoustics - particularly room dimensions and speaker positions.
The impact of the combination of these two is actually so strong that in most cases, it doesn't even make sense to utter a single word on sound quality without speaking of them.
This is also why it's not unusual to see completely different reviews of the same speaker.
In one case the speaker might be placed in a sweet spot inside the room and hence the user might be satisfied. In other cases the same speaker might be ill placed and hence user might even have returned it.
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The point most people miss here is that it mostly isn't even about the engineering behind the speaker itself. It's about where you place the speaker inside which room.
So, in order to solve this problem, I've partnered with Acoustics and Audio Engineering PhD Andrea Cicero from AC Acustica and created Soundton - a simple, 2D, browser accessible online speaker placement calculator.
With Soundton, now there's a way to figure the sound quality of most speakers before you buy them.
Read more about its working principles at soundton.com.
The end colormap provides you the locations with the best (green) and worst (red) acoustics.