I'm sorry to hear that.
I've been using a Tab S 10.5 for years and haven't found a worthy replacement yet for reading comics. The screen is just too good and the aspect ratio is perfect for portrait reading.
There are rumors that iPads will adopt OLED in the future, in which case the iPad Pro would become the clear best tablet for comics (even though the aspect ratio is not as close to that of a comic page the size more than makes up for it). There are also rumors that Google is working on Chrome OS tablets that can run Android apps. If that's true I expect we'll see more high end options again. Finally, Samsung is coming out with an Galaxy Tab S3, but I suspect that will just be a faster Tab S 2, which is an Android take on the iPad with the iPad's aspect ration and lower resolution.
If I were you I'd either buy a used Tab S again or else get something cheap as a stopgap for a year or two until there are better options. Something like this would work if you'd want to stick to Android:
http://www.laptopmag.com/reviews/tablets/asus-zenbook-3s-10
Many in this community prefer iPads, so those are an option as well, albeit a more expensive one.