Not so fast though... Before replacing your current double bed or king size bed with a super king, make sure that you have sufficient space in your bedroom. They're BIG!
A bed which is too big in a small room looks a bit odd and doesn't make good use of the space. Conversely, small beds in large rooms can sometimes feel lost and look out of place - so if you have a huge bedroom then maybe consider the super king.
Around 30-35% of your bedroom should be taken up by your bed. For a super king bed, this would mean a bedroom size of around 5.5m x 6m which a wonderfully large bedroom.
Pssst... Keep in mind any other bedroom furniture you need to fit into the room before going bigger!
A walking space of at least 70-80cm around your bed or to the nearest wall, window or bedroom furniture. A standard corridor width in the UK is 90cm, so this should be enough to move around your bedroom freely without it feeling like an assault course!