Black coffee is where it's at.

I generally like dark or medium roasts on the strong side. Coffee that is too weak is just nasty. Even super strong coffee is better than coffee that's a little bit weak. I generally drink Green Mountain Coffee because it is roasted relatively close to where I live and I think most of what they do are Arabica beans, but I'm not experienced enough to be able to determine huge differences in the type of bean itself. I also recommend not drinking flavored coffees as they are really only good for the smell and novelty factor, not really the taste.