See my mantra is that my batteries are the most important part of my setup. Although I've had zero issues from any of the suppliers I used as an example, plus ecolux
@simong who I think is stellar also, should a battery I bought have a problem then there's someone to get hold of, moan to and if all else fails report. Which,because I'm careful, I've not had to do, and hope never to have to. If I bought from China then there's much less comeback.
Different people expect different things from good service. For me, and what I expect, I just use who I know and I'm comfortable with.