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