First, the quality of the flavor is a big attraction. If you smell a TV liquid right next to a generic, there is a robustness to it that I would compare to chef-grade food compared against fast food.
Geoff's Blend in particular is great because the atomic cinnamon (think of an Atomic Fireball candy) has a lot of punch to it, but the banana nut bread and the other flavor (can't remember what it was) give it a complexity that make it a little more interesting.