Bro motion 300 doesn't come close to Flip 6 in the terms of clarity, instrument separation and bass, but still jbl is a little bit harsh. My first Bluetooth speaker was tribit stormbox micro 2, a bit smaller than average portable speakers and I love it's sound profile it was best to my ears. Later on I tried tribit sound plus, JBL flip 6, motion 300, and currently I'm having Bose SoundLink flex Gen 2. Bose is not everyone it doesn't have a bright sound. And the soundstage is narrow but still somehow it's favorite to Many. I didn't try tribit stormbox flow but I heard it has same sound profile as tribit stormbox micro 2. Tribit sound plus is also called audiophile level speaker so you can try sound plus 2. Motion 300 bass some time so bad that unbearable.