A Bluetooth speaker that sounds really great?

One note on the Audioengine B2 speaker -- it requires an AC connection. It is not battery powered. But it is a good speaker for its size and cost. 

I bought a JBL Charge 6 as a present and was pleasantly surprised when it sounded better than the recipient’s larger, plug-in Bose dual speaker set-up.

It’s really portable, the battery life is amazing, and it pairs with other JBL blue tooth speakers if you want stereo.

I think it lists for $300 but recently was on sale for over $100 off.

I like my Dali Katch G2, I actually have two of them as they have left speakers on one side and right speakers on the other so are best used sideways on, so I bought another for situations where I can't use it like that.

The previous Katch had left and right both on one side.

Ultimate Ears ( UE Boom) are good and can be paired.

I have a pair of Ultimate Ears Megaboom 3s. They can be paired in stereo, are waterproof and omnidirectional.  They were my go to speakers when I had a Hot Tub. Great sound, bass and long battery life.