Hi I am looking for an android tablet that I can use and keep updating for the next few years to come (i.e. 4 years or longer). Mostly used for reading and listening to ebooks/streams (not looking for an ereader) but I like to have the ability to install the latest software. Noticed that even our national library android app is very picky and doesn't install on older android tablets and there are a lot more examples. Unfortunately I cannot change the ecosystem that people are using and some things are too useful to ignore. That said I don't want to spend money every few years on a new tablet because software can't be updated. That really rubs me the wrong way.. The last android tablet I bought was an asus tablet that was never hacked so no custom roms available or else I still would have been using that one. The last produced nexus tablet was the Nexus 9 - does not have my favourite screensize but it is still an option because I guess being a Nexus device this was more 'freed' than others? Second hand devices are fine, software longevity is my main goal. Before anyone suggest buying an ipad - I am only looking for an Android device, not interested in buying Apple products. Any suggestions?