When I buy, I don't really care about the sex...the plumpest, or the longest jumper, or the neatest pattern usually catch my eye and then I go from there. I've attached a photo of my favourite, a girl I named Lichen. She is the only one I properly sexed and I picked her because she has been the only one I have seen with the two tone colouring. Makes her very unique and easy to spot with the others!