Australia, Sydney. IPTV Smarters Pro on a Samsung Galaxy Tab. The mobile experience is as smooth as the TV experience which is nice for watching in different rooms.
UK user, closing observation: three months of consistent use without a single support ticket needed for stability issues. That is the standard I expect.
I use Kodi with the IPTV Simple Client addon. Works well but requires more manual configuration than dedicated apps like TiviMate. Fine for technical users who prefer the Kodi environment.