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