UF, or University Flake, is a wonderful virginia/burley flake with a very light casing of plum. Pretty strong on the vitamin-n, but definitely a great smoke. Sherlock Holmes is mostly a virginia blend with a bit of burley in to cool the smoke down and balance it out. It has a fruit flavour most say is like dried apricots. I enjoy both, Holmes more than UF though. If you liked Sherlock Holmes you may want to check out Peterson's Luxury Blend. It's a wonderful virginia/burley/black cavendish blend cased with a wonderful mixture of orange, honey and vanilla.