These tiny girls are very responsive to voices, even when put at the back of the group they waddle back to the human no matter how many times they are moved.
It says a lot about how workable they will be.
Tilly the coon hound mix was a runt, Sable was a runt and even my big guy Jack was runty.
They all grew well with individual attention and have great recall/trainability.
To me size is not so important as smarts.
Even if these girls were the biggest in the litter they would be the ones chosen for their smarts.
I like the darker colored pups but I think hubby liked the lighter colored one better. She was extra stubborn about wanting human contact.