Other than the Tab S3, there are really no other higher powered tablets around on the market (running Android) that are somewhat readily available on a global scale. If you :really: need h265 h/w decoding, then you could go for the Tab S3, take note that it is running a Snapdragon 820, which is already somewhat outdated. At this point, I'd just settle with a large screen phone (ex: Note 8, S8+, Mate 9) if I wanted to feel safe in paying an arm and a leg for such commodities. You can also try looking over the fence at the iPads, but I am not sure about the quality of video player apps in iOS. At the very least, you got VLC. Other than that, any iPad starting with the 2017 one ("budget" one as they call it) should be able to decode h265 at the very least in S/W mode. If you want the bee's knees, the iPad Pro 10.5 should be about right.