wow this thread is old but I don't think I replied.

my top 10 in no particular order :

1. Pit bulls (any bully breed, too! )
2. Hounds
2. Labrador retrievers
3. Rottweilers
4. Catahoula leopard dogs
5. Collies (border collies included)
6. Great Dane
7. St. Bernard
8. Shepherds especially mixes that I have met where I work (local shelter)
9. Shiba Inus
10. Mutts!

I also like ACD's, heck I love them all. oh and how could I forget Huskies! Love them, too.