XBMC now works pretty well on several Android set-top boxes, but if XBMC is the only application you’re going to run on your device, you may prefer running XBMC in Linux to gain a bit in terms of performance. The only catch is that it’s not available yet, but J1nx posted a teaser video showing XBMC running in Geniatech ATV1200 set-top box.
The demo above outputs at 720p, hardware video decoding appears to be working, the user interface is rendered at 30fps with a video played in the background, and CPU usage is about 10 to 20%. Under the hood, the box is running Linux 3.0.50, with Linaro 2013.02 armhf rootfs and BusyBox 1.21. An image is not available yet, and there’s no ETA.