While both are great, Grade A beans are more cosmetically appealing and contain a higher moisture content.Grade A beans are typically longer, roughly 5-7 inches on average. They have more "caviar," or the small vanilla seeds you'll find inside. Grade B beans taste equally as wonderful as the Grade A, but they smaller and may have physical defects such as scratches or even tattoos (farmers do this to protect their crops from theft). Grade A beans are also known as "gourmet" beans, and Grade B beans are referred to as "Extract Grade" beans.