Both devices serve different needs, so the best choice depends on what you want most.
The Airtel Smartbox (as seen in your photo) is mainly focused on providing fast internet, streaming, and smart TV functionality—great for browsing, Netflix, apps, and football.
The Moreplex decoder, on the other hand, is a satellite TV decoder, so it’s better if you want access to a variety of TV channels, especially those that might not be available online.
If you want data for multiple devices and smart features, go for the Smartbox; but if you're mainly interested in satellite TV channels, then Moreplex might suit you better.