I think the European dogs may be heavier, but not often are they as tall as some of the US dogs. I honestly think a 29" dog in the showring in Europe is most unusual, whereas here it tends not to be frowned upon.
Adam, I think you are going to have a big dog!
I actually mentioned my question about nutrition having something to do with size to my vet this morning and he said he didn't think there was any connection and that he wasn't seeing so many huge dogs in other breeds, so perhaps it's just RRs that are growing bigger!
Caroline