It depends on what it is in reference to. It usually means its a brand that is known to be trustworthy. Meaning they make a good product.
Apple still remains the most trusted brand...
Hewlett Packard is the most trusted brand to buy a computer from.
Arrow Electronics has a strong reputation as a trusted brand. It partners regularly with the industries most trusted suppliers to meet customer's stringent circuit protection needs.
Both.
Instead of using the phrase "A most trusted brand", you could use the phrases :"Top of the line" orClassic
Sony is the most trusted right now.
Robotic Vacuum is a well known and trusted brand.
Sony - It's a well know brand and its a brand trusted by many.
2013 Honda Accord Coupe won the following awards: Best Overall Brand, Most Trusted Brand, and Best Value Brand. Honda is a very trusted brand and that's why it got these awards.
Moncler Kids Clothing is one of the most trusted names in the industry.
Kingston memory has always been a very trusted brand of memory.
Industrial scientific is a trusted brand that sells gas detectors. They have good service, reliable products, and maintenance help if problems arise. http://www.indsci.com/