A serious test of speakers requires exactly the same conditions for all
(same (bluetooth) source, same audio program or app, same equalizer, same music)
Claro the sound is subjective .
The human hearing is getting worse regarding the age,
and the feeling about the sound is different of course.
Even the type of music you are listening need different adjustments
of an equalizer. So far.
What would you do, when travelling?
Taking a small, light speaker (sound not so excellent)
or a heavy, bulky one with top sound?
ANKER offers many different speakers for different usage.
But for me a speaker has to produce optimal sound, this is it was made for.