Well the toaster really seals the deal.
No but seriously, that 2nd one has a NICE lookin tail for how much size it looks like she has. I would default to them being common (or Columbian) red tails (BCI). But they look nice!!
And oh yeah, boas have a bit more of a inquisitive nature (in general) than bps. Mine always seems to look at my cat and I always imagine her saying, "In a couple years, when I'm big enough, I'm going to eat you!" Hehe!