I start the day with a pot of tea, then move into coffee. I live next door to a roasting business (LOL) so fresh coffee in abundance. Local Australian, Columbian, Yemen but the finest I've tried is an original Arabica root stock discovered in Sumatra. The Dutch planted them 300 yrs ago and they were forgotten/lost. So smooth and little bitterness. Also some very nice Robustas, Queen of the Nile and Buttercup Gold from South India.
Oh yeah I have drunk Kopi Luwak numerous times and yes there is a major difference in flavour but not worht the US$50 the Japanese pay per cup!