*hug MacsMom* I don't think anybody is trying to put words in your mouth, they're just trying to help you find the dog you want. => It can be REALLY hard to tell with puppies sometimes, and even with the best breeding dogs can pop out of standard. I know many breeders who had dogs that were excellent show prospects until they grew to be out of standard. It's a waiting game for them to see where the dog grows to - and these are people who KNOW the breed backwards and forwards!
I know what you mean about wanting a dog on the larger side of the standard as opposed to a small dog... but I'll tell you that Auggie is 13.5, which is on the smaller side of shelties, and I initially wanted a bigger one... but I raised Auggie from a 10 week old puppy and I love him more than anything. The size is irrelevant. =>
If you REALLY are concerned about the size due to things like children in the house or anything like that, adopting a younger dog from rescue really is a good idea. That way you just plain KNOW what you're getting. Rescues do occassionally get puppies or pretty young dogs, like 6 mo... rescue is a lot like finding a breeder and getting the right pup from a breeder, though. You have to wait for the right dog and the right match to come along, and sometimes it can be a long wait.
We just want to inform you about all the options out there and help you make the right choice. => Good luck!!