Can anyone recommend me a cheap Android tablet to play Old School Runescape on?

like the title says an anyone recommend us a cheap Android table to play Old School Runescape on?

I am looking for one where the battery will last at lease 2-3hrs and as cheap as possable. Cheap OSRS Gold.OSRS is coming out with a mobile client for Android and ISO and I was looking to play it on a tablet.

I would rather have a android device over ISO but ether is fine.

I thought about a amazon fire kindle and just doing the work around to get the google play store on it. But I am not sure how well it would run or how much of a pain that would be.

Size wise bigger is better, but small is fine.

If it can be under $150 that might be great, cheaper the better.
http://www.rsgoldfast.com