I drink a lot of coffee and I can't tell much difference between the beans themselves. It might be because I put milk in my coffee. The roast matters. A dark roast often tastes burned or bitter to me. That's why I don't like Starbucks, but they offer more roasts than the used to.
Cold pour tastes nothing like brewed coffee. It tastes almost lemony and is better black. Some people love it. I like it ok.