I think most popular goes to Glot/Glati, with Bygg/Beyla in second-place. Now, for tinies with the biggest regret factor, I think it's Hati/Skoll. So few of them were ordered, but since they've been shipped, so many want one now. Me personally, I love them all! (I'm going to end up with 7 of them... eeeps! Hopefully I can restrain myself from adopting any more ^^;;; )
