I'd love to get a newer iPad, but the price is bananas for me given the use case. I bought the pre-2018 model and it's still holding on but I'm going to be bummed when this one reaches the end of it's usable life due to software updates and such because I can't afford (or, justify maybe) one of the newer models.
The really cool thing about this, for those who haven't tried, is that in landscape mode the 12.9" is really really close to the same size as a two-page comic spread, so you can read them like they were intended, not one page at a time. It's a little smaller, but not much. Makes a huge difference vs. page-at-a-time reading.
(I use Chunky, which is amazing and I wish the author charged money for it or had more options to pay them than one mostly-unnecessary and really-cheap IAP, because it's really good and I never want it to go away)
I've heard Panels is decent as well.