McDonalds is now offering the "linger zone" in some of its stores where it will be similiar to a Starbucks environment with couches and Wi-Fi.
At my local McDonalds, a large cup of coffee is only $1.71. For a few dollars extra you can get a sausage biscuit and hash browns. The temperature is just right and you can tell them how many sugars, how many creams...I believe some stores now offer flavored coffee. I saw "bold" flavors in some stores.
I have not seen any "linger zones" in my area, but I would gladly switch over to the McDonalds if the area was redesigned to be more of a welcome atmosphere.
Another plus about McDonalds coffee is that they are very fast. Waiting in the line at the local jam packed Starbucks is so time consuming.
The taste of Starbucks coffee is inline with what I can find at the local gas station. Mediocre. Dunkin Donuts has the best coffee (expensive though). McDonalds is better then Starbucks, but only slightly behind Dunkin Donuts.