Any Samsung duo ie dual sim as they can be repaired in the UK also unlike a lot of the thai manufactured phones. I went for the A04 which was only about 4000 but near new 2nd hand ones of that model are only about 2k on market place
Yes, its their country though so their choice. We all have the choice to leave and its not for us to bring our own values here and try and push them on others. Enjoy Thailand or leave if you dont