Can't speak for other brands, but Flora Farms 24k Gold concentrate is disgusting. It tastes like wet, rotten moldy wood or hay. Nastiest thing I've ever had. Tastes like mold.
If the Monkey Tape concentrate/bud/etc. is by Origin or Stability Growers, it's Sour Dubb x Chem Sis x Chocolate Diesel. And it tastes like diesel to me. Diesel and oranges. I love it. It reminds me a LOT of East Coast Sour Diesel which is my favorite, and growing up in Florida, had a lot of. It may taste different depending on who the grower of the strain originally was because as I've had with GMO/GMO Cookies (the name is interchangeable. It's supposed to be garlic & diesel but 100% can taste like coffee depending on the grower) sometimes flavors can vary depending on the way they grew it. I personally, really like this one. I like variety, so I don't often get the same strain twice (unless it's Sour Diesel, then I want ALL of it) but I've bought this one 3 times in a row now. I smoked it as a concentrate by Origin Extracts at 78.78% THC.