I love coffee. I grind my own, Dark Sumatra from coffeebeandirect.com. I use distilled water, and brew it in a cheap Black and Decker Drip coffeemaker that does not get so hot it extracts the most bitter oils from the beans. Smooth, rich, low acid, and I can drink it hot or cold. No acid burn, no matter how strong I make it.
Starbucks is pretty nasty compared to the coffee I drink, so I avoid the place like the plague.