There are many factors that go into deciding which ice melt to purchase.  Whether performance is your main concern or if other issues such as budget, vegetation or even corrosion may play a part.  Following is a basic table of items you may look for in a de-icer. 

Effective at low temperatures

Budget 
Oriented
Can enhance vegetation Wide Variety 
of Packages
Private Label Option Coverage Indicator Low 
Corrosion
WinterGreen® -25°F - - -
Ice-Foe® -25°F - - -
Triple Melt® w/Activar® -10°F - -
Eco Melt® w/Activar® -5°F - -
Blaze® w/Activar® -15°F - - - -
Nova® -5°F - - - -
Select® Liquid -15°F - - - -
Walkway™ -25°F - - - - - -
Ice Guard -15°F - - - - -
Ice Melt w/CMA 0°F - - - -
Peladow® -25°F - - - -
For more specific information:

www.ossian.com