Write your household brief first
List the practical constraints that a dog would live with: visitors, other animals, stairs, working hours and the adults available for handling. That brief is more useful than deciding which mastiff looks most impressive in a photograph.
Meet adults in ordinary settings
Ask breed clubs or reputable rescues about opportunities to learn from adult dogs and their caregivers. Discuss what surprised those owners, what costs more than expected and what arrangements they need when traveling. Listen for recurring responsibilities rather than one exceptional success story.
Compare the same evidence
For each individual dog, ask the same questions about health, behavior, support and the agreement. Avoid scoring breeds on aggression or treating one as a simpler substitute for another. If the practical demands do not fit your life, changing the breed name may not solve the problem.
GO A LITTLE FURTHER