Infiniti QX60, Acura MDX, or Honda Pilot?

My dad might have to move because of his job and my grandma and aunt would be moving in with us (I'm 17 and an only child) making there be five of us and basically having a SUV would be necessary. Would a used 2014 Infiniti QX60 (CPO with 29k miles), 2015 Acura MDX (non-CPO), or new 2017 Honda Pilot be best?
Added (1). BTW the Acura has 23k miles.

Read more: Infiniti QX60, Acura MDX, or Honda Pilot?