Which sling is better the Help-em-Up harness or K-9 EZ sling

Both slings will support the hindend of your dog.  The Help-em-Up harness also has a front sling to help you lift the entire dog.  The Help-em-Up harness will remain attached to the dog when you let your pet go and can stay on for short periods of time.  The K9 EZ sling will no longer remain on your dog when you let it go.  However, it is easier to get on and is ideal for supporting your dog for short distances or if you want to go on a walk with your pet and provide hindend support.  The Help-em-Up harness would need a walking handle to perform the same task.