The Ultimate Ears Wonderboom four is without doubt the best cheap Bluetooth speaker on this list, combining good sound with an ultraportable design and efficient 360-degree audio. It is really just a straight-up Bluetooth speaker (so no Wi-Fi) but you can pair two of these together both in stereo https://www.bluetoothspeaker.top/vintage-bluetooth-audio-indoor-and-outdoor-universal-bluetooth-speaker-wireless/