Any good power extension board deals this BBD?

Best Quality Power Extension board will be built by yourself.
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Try it yourself or the shopkeeper can make it for you with best Quality sockets and box and customisable too, use heavy wire.

Have been using one by GM for over 2 years. I like it

But since you require individual buttons, getting a custom one made might be better since there'll be limited choices by brands for this

try getting Belkin , overly long lasting products , I am using them for more than a decade  .... 2 x 3 socket since 2012 , 1 x 8 socket since 2017  ... all with seperate on and off switch 

Belkin...one and only. The Best one

belkin is best like everyone said but GM also good and reliable for half or less price and they has a individual button board model is GM 3061, usually GM 3060 comes in offers but don't have individual switches