On stands? Wall mounts?

Sonos made PLAY:5s (of several generations), and now makes Sonos Fives. I think the mounts on the back of them are all different, so beyond the question that ​@nik9669a asked, it would be helpful to know which speaker you’re talking about, since there is no Sonos 5. 

If you are referring to the Sonos Five shown here (Sonos no longer uses numbers for this speaker design) you can click the links below for mounting options. There’s no right or wrong way it just depends upon your use case. Personally, I prefer stands for stereo listening.

• Sanus Speaker Stand for Sonos Five & Play:5 (Gen 2) | Sonos
• Amazon.com: Flexson Wall Mount for Sonos Five - Each (White) : Electronics