Bose Soundlink Micro vs Echo Dot 3rd gen vs JBL Go 2

[Nebell]

I don't know where to ask this, so I'll ask here.

I'm looking for a small portable speaker.

I found this batter pack for Amazon Echo Dot
https://www.amazon.co.uk/dp/B081319G8Q/ref=gno_cart_title_3?_encoding=UTF8&psc=1&smid=A2OCTA6HTEPF6X

Seems like a nice deal since Echo Dot 3 does have ok sound. And on top of that I already own one.
But I don't mind spending a bit more on a better sounding waterproof speaker which also can easily be attached to my backpack.
Bit does Bose Soundlink Micro have better sound?

Maybe someone here owns both and can give some insight?
Anyone have experience with JBL Go 2?