800 numbers don't have the same purpose anymore. They used to be valuable when you were offering out-of-state customer service, and needed a number that didn't cost the customer money to call.
Today, there's really no such thing as 'long distance rates.' So, it's mostly a vanity option.
Also, they separate the 'office' number from your 'marketing' number. However, Google numbers can serve as your marketing number. You just need a number to forward google calls to. Google number set ups tend to interfere with your phone service, so 'that' can be a deal breaker.