Both Pumpkin and Darby prefer to be with us than not.
As far as preferring Glenn or me, Pumpkin is pretty much an equal opportunity gal. If Glenn and I both called her at the same time, she would be seriously torn about which one of us to choose. (And I have no doubt it would be the one who was making the most "happy," "let's play!" noises!)
But, Darby? Darby is my velcro dog.
She is happiest if she is near me, and often on me.
When I settle down on the sofa (as I have been doing an awfully lot of since my surgery last week) Darby will do her best to get the spot on the sofa next to me. When Pumpkin gets there first, Darby often won't even bother to jump up on the sofa, she'll come around and lie down on the floor next to me where I can pet her or -- sweet heaven! -- rub my feet on her back!
I like the expression "velcro dog." It fits my Darby-girl just right.