Most of the burley grown commercially is purchased by cigarette manufacturers, who toast it, roast it, and cajole it, for blending into their cigarettes. So commercially grown burley is not routinely fermented (or kilned) like cigar tobaccos. When I obtain commercially grown burley, or with my home-grown burley, I always kiln it before use. That makes all the difference in the world.
Burley varieties tend to consistently possess an aroma usually characterized as "nutty". Aside from that attribute, Maryland is similar in its blending properties, and its effect on the final blend's smoke pH, which determines mouth feel, tongue bite, etc.
Bob
EDIT: Also...Welcome to the forum. Feel free to introduce yourself in the Introduce Yourself forum. Check out the WLT Wiki (link above) for discussions of various tobacco types.