Optimal drive base size

Hi so my team and I are trying to shrink down our drive base to make it more competative. Does anyone know what the optimal drive base size is.

Thanks in advance

If anyone is wondering our drive base is 17in wide by 18in long

In my opinion the best size is 25 wide and whatever length best suits the type of robot you are building.

If you want to have no intake deploy, do 25x25. If you do want an intake deploy do 25x30.