Which is better BLS or CPR?

The difference between BLS and CPR is that the BLS class is an advanced CPR AED course geared towards healthcare providers.. BLS is an abbreviation for Basic Life Support. The BLS CPR AED is only recommended for medical/healthcare professionals, if you do not work in or provide healthcare the best course for you would be a standard CPR AED course with or without First aid. This card is valid for two years.