I normally think most Bose stuff is pretty poor, but the mini is actually pretty decent. Good with vocals and the bass is very tuneful and there is a lot of weight to the sound.
It needs a small amount of eq and I use aneq on android, which has 5 channels – so I cut the lowest bass one slightly and up the top two slightly for more clarity.
From a youtube comparison I think it probably sounds like a soundlink v3 then, but that is twice as heavy and a lot bigger, which is a consideration for traveling, especially if they will want it in your flight hand luggage in future.
I heard a soundlink v2 but wasn’t impressed by it.
Resale will also be better on it than the creative.