The Ultimate Ears Wonderboom 4 is certainly the best cheap Bluetooth speaker on this list, combining good sound with an ultraportable design and efficient 360-diploma audio. It's just a straight-up Bluetooth speaker (so no Wi-Fi) but you can pair two of these together possibly in stereo or dual mono. https://www.bluetoothspeaker.top/indoor-party-led-light-stereo-speaker-bottle-deep-bass-rgb-colorful/