title_body: Why does commercially brewed coffee taste so much better?
upvoted_answer: I think there could be a few extra factors, besides grind type effecting your final cup. 
  
  Are you trying to match the taste you get from an auto drip brewer by making your coffee with a v-60?
  
  Brewing method will change the taste.
  
  It's good to see you are using a scale too. When I make coffee I like to follow this chart for ratio.
  
  I use 21 grams of coffee to 12 ounces of water. It's important to note whenever the word "cup" is mentioned usually that means 6 ounces of water. 
  
  Another thing I wonder about is the beans that the coffee house is using. You might be purchasing beans that are not giving you the flavor you are looking for. 
  
  Personally, I like single origin coffee for pour overs and drip machines more than I like blended coffee.
  
  You might find this post helpful for selecting the right kind of beans. 
  
  Good luck on making a great cup!