There are no significant disadvantages of the Index, and it's a great performer on the wall. Like other types of wall climbing gear, you're likely to feel more comfortable with familiar equipment. The Index provides the Petzl Ascension with some stiff competition and is worth purchasing if the index finger operation is something that you would use. We liked this feature and found the added versatility to be useful.go to full review

The Kong Lift slides well up the rope, but its cam trigger can only be operated with a thumb and isn't as comfortable as models with molded plastic or rubber triggers. The teeth aren't nearly as aggressive as those of other mechanical models that we tested, but this didn't seem to make a difference during testing. Our testers' chief complaint about the Lift is that the bottom hole is too small to fit a locking carabiner's gate. This isn't a huge issue, but it can be an inconvenience when you..." go to full review