Don't miss these record-low Memorial Day deals on Bluetooth speakers, including 3 we rate among the best you can buy today

We rate the Sonos Roam 2 very highly, and with 25% off it's even more attractive. It produces rich, powerful audio, and while it's not the loudest outdoor speaker, we're talking quality here. The Roam 2 has Wi-Fi as well as Bluetooth so it can stream even higher quality audio, and in our extensive time with the speaker during our Sonos Roam 2 review, we didn't encounter any signal issues or dropouts. And we really liked its 'Automatic Trueplay', which adjusts the sound based on the acoustic characteristics of the place you put it.

I genuinely love this cute speaker with its integrated karabiner: it comes in a range of bold colors as well as some more sober ones, it runs for 12 hours between charges, and it sounds really good. This is the speaker I'd sling on my backpack for a hike or a beach trip: it's got IP67 dust and water resistance, it's surprisingly loud for such a small device and JBL has worked its usual acoustic magic to make it sound great. We've dunked this one in the Techradar testing tank during our JBL Clip 5 review, and it didn't blink, so it's also a great shower or bathtime speaker too.

The Stormbox Blast 2 is well named, because it's an absolute blast to use: with 200W of power it's capable of rocking entire blocks, and in our Stormbox Blast 2 review we said that its low end was "phenomenal". It's a bit of a workout to wield because of its hefty size, but that's why it's so powerful: there are big speaker drivers behind that grille, and a big battery to power them for up to 30 hours. It's IP67 rated for water resistance, it's got a karaoke mode and it also lights up, which is never a bad thing.

The ULT Field 3 is the little sibling of the monster ULT Field 7, which is less of a portable speaker and more of a giant bass bazooka. This smaller model is less frightening-looking but it's still got plenty of power – and with Sony's ULT bass system, 24 hours of battery life and fast charging it's an excellent option for big days and nights out. Some reviewers have suggested it's the perfect travel speaker, although if you're looking for something really small Sony makes an even littler model, the ULT Field 1. That's on a deal too: Amazon has the Sony ULT Field 1 down from $129.99 to $88.00, a saving of 32%. This is the lowest price that this speaker has been since its launch only a few months ago, though.