I don't know why people believe they can trust salesman. Its VERY rare you find a good one with real knowledge and facts that cover most peoples needs. They are typically not technical either.
Car dealerships are the WORST. Don't EVER trust those guys. Most cant even remember what the dang brochure says sitting on their desks.
Look up the definition of "Salesman". How do you know what their background really is? How do you know you can trust a single word out of their mouth? They are only there to SELL YOU PRODUCT!
And the internet is full of everything.
Do your own research.
Take personal responsibility and accountability.