A Bluetooth speaker that sounds really great?

I really like my ultimate ears wonderboom.  It is surprisingly musical.  I tried using two for stereo, but actually, listening to one alone sounded better. Strange. It only does Bluetooth, not Wi-Fi.

Thanks for the recommendations guys; I will definitely check into the Boombox as that WiFi option sounds fantastic.

I have the Big Marshall. 

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.