Hi again Ian, I have a imx6 and run Frodo 12.3 Linux build and its still running well, but it no way near as good as T8 and T8s. I also own both of them as well and yes I still get problems with streams, but that more down to servers.
Its hard to choose between T8 and the T8s as they are the same, but the T8s has openelec and a internal bay for a HDD.
Openelec is a stripped down version of Kodi and for it to work it has to reboot and shut down all if the android side of the box . So now all the power is for this so it runs smoother and I think better as its part if my home cinema set up.
Hope this helps and yes things have change with the wizard, but that was just out of droidbox control. Although I've just had 4 days getting my box back for an update so not doing that for awhile.
Dave