I would like a big dog, which one?

[daisybee]

Hi,
I just lost my dog of 13 1/2 years. I would like to get another dog. The dog I lost was a labrador. I love labs, but I don't know if I have the energy for one anymore. The last one I swear didn't calm down until she was ten years old. Anyway, does anyone have any suggestions. I have been thinking about a newfie, I know they are huge I'm sure they shed and I know about the drooling, anything else I should know? What are some other large breeds. I have three little dogs already, but I just don't feel right without a big dog around the house.
My daughter does have allergies and from what I've heard the designer breeds aren't a good idea.