I do like the idea of using a device that runs Android as it would give me a greater number of options for development. While I may stick with HTML5 and JS I also like the possibility of writing a true Android application. I'm not interested in Android Play or any of the other Gapps, though I suppose I could sideload them if I feel the need. I will most likely be running a very simple custom launcher so that the device operates more like a purpose built embedded platform rather than a general purpose Android tablet.
My question is what device would the experts here at XDA recommend I use? The Kindle has the benefit of the 800 pound gorilla that is Amazon but it doesn't run Android natively. Nook has the benefit of a decent sized company behind it, the fact that it runs Android, the downside is I'm not entirely clear on how long B&N will stand behind their eInk devices. Kobo is the little guy in the corner, I know next to nothing about the company, the build quality of the device, or the future of the eInk devices, but like the Nook it appears to run some version of Android.
In truth, it's not really all that important that the device I choose be offered forever. This is a personal project, nothing that's going to market. What's more important is hackability, Android, and at least the possibility for newer custom Android ROMs to be installed.
Thank you for your help.
P.S. If this is the incorrect forum for this I apologize.