I picked up a cheap 2nd gen HD7 and rooted it and threw on Play. Decided I should try it on my HDX8.9. Did Towelroot and then kindlefree for the play store. I kept having issues installing until I realized ES was changing permissions back to read only after I rebooted. So I'd install an apk, reboot, change permissions and repeat. Play works like a charm. Very glad I got the 64gb version. Should be a useful tablet for a long time.
S4, 7" Tab 3 on Sprint and my trusty old Epic still in the stable.
reseller. Can save you at least 10% on their products.