The Ultimate Ears Wonderboom 4 is unquestionably the best cheap Bluetooth speaker on this list, combining good sound with an ultraportable design and powerful 360-diploma audio. It is just a straight-up Bluetooth speaker (so no Wi-Fi) however you can pair two of these together both in stereo or dual https://www.bluetoothspeaker.top/new-waterproof-portable-rechargeable-bluetooth-speaker/