The Ultimate Ears Wonderboom 4 is certainly the best cheap Bluetooth speaker on this list, combining good sound with an ultraportable design and successful 360-degree audio. It's just a straight-up Bluetooth speaker (so no Wi-Fi) however you can pair two of them together possibly in stereo or dual mono. https://www.bluetoothspeaker.top/bluetooth-speaker-inalambrico-speaker-wireless-dancing-speaker-wireless-bluetooth/