We only buy Kona or other island beans and grind out own coffee. Have been for years now since my wife found the lower acid of hawaiian coffee suited her.
I do not care as long as it has caffeine, but prefer brewing my own.
My favorite coffee is Kona, but I also like Green Mountain coffee from Vermont.
I’ve got to have low acid as well and found that only Arabica beans are perfect for my stomach. I buy the Marcella brand 100% Arabica at Menards of all places for about 4.00 a bag of ground. Eight O’Clock coffee is also Arabica beans.