I think around here it is some people trying to get out of the 22" USDAA class and into the 26". So I can see that for AKC as well. The only advantage I can see is that you can fit prettier collars on a bigger dog. Maybe I'd get a giant BC for that. But mostly I like the wee little ones.
I also have to ask - how did he get to be Squiggles? I call Gusto that sometimes based on his slow-motion, full-body, swinging hips wag that he does when I come home from work.