Personally i would opt for a firestick and sideload Kodi onto it and then add the URL for your build and job done for ?35 you also have the added benefit of of all the Catchup TV services working netflix and Amazon prime.
The cheaper type boxes such as the MX,MQ etc.. normally run older versions of android which you cant upgrade and so are stuck with using an older version of kodi, you dont have that problem with the firestick as amazon keep updates regular when needed.
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