My 11 year old poodle and my 7 month old yorkie has became the best of friends. I would also say if we added another dog to our bunch it would either be poodle or yorkie.
I adore French Bulldogs. I have NEVER met one I didn't like.(But my husband doesn't do well with the pointy hair in the furniture, carpets, or bed.
I would say Westie or Golden are always a safe choice. However, I don't think I would own one.

no reason just prob wouldn't.
Mix breed dogs usually have less health problems... With that being said I 'like' breeds.