Can you recommend a coffee bean that gives a really rich taste?

I usually get Melitta arabica medium roast beans with hazelnut flavouring. I've been trying a bunch of different kinds - first I went through what the grocery store has in bulk and found I dislike French Roast and espresso and other dark ones because they just taste burnt to me.

I tried Pike Place roast from Starbucks this morning, and that was quite acidy at the back of my tongue. I don't think I'd have three cups of that over the morning, because it would be too much. Maybe cutting down to two would be good. Still it seems a bit harsh or unsubtle. Maybe I could make it a bit weaker at home and it would be better. I might try it.

I used to get a chocolate flavoured one that was nice, but it's gone. The Mocha Java from the grocery store was okay, but a bit weak.

Any suggestions? I'd love to try David Lynch's coffee, but at 21 pounds plus a bunch more for shipping it looks like almost $50 for 12 ounces and that would be a too-extravagant experiment.