M119 is a less theory-centered class for those who may not be going into a math oriented major. This class will be good for exposing the student to abstract mathematical models and the associated reasoning that will help improve critical thinking. There is an emphasis on applications, especially in topics related to business, economics, and finance.
M211 is a more in depth class for those who will be using calculus regularly in their field of study. The course includes a surprisingly theoretical approach to the class in which the student learns the postulates behind the mathematics before learning the practical operations. It is especially important to be comfortable with abstract reasoning when taking this course.
Bottom line - don't take M211 unless you really love math, or are required to take it by your major.