I have been using Amazon Echo devices in all my outbuildings for years. Very mobile and easy to use. Sound is very good if your digital music download quality is good.
PS, I've been using the Echo Dot 1st generation all these years without issues, and my buildings are not heated either. :-)
I had a Bose to start with. Good sound but didn't last very long in a farm shop environment. Now I have a JBL Flip5. Been using it for probably 3-4 years pretty much every day, sometimes all day long. Sound is very good and no complaints.
Bose is hard to beat for sound quality. I'm not snobbish on speakers so I have JBL. All the Walmart's have or are supposed to have live demos of all the brands listed so far.