Originally Posted by
astroflyer
I find Cat 4 certs pretty impossible to use in my travel and would just at the chance to burn them. It's worth thinking about your future travels to consider if there's any chance you're going to be near a lower-tier brand in flyover country in the future.
Agreed - while using it on a Cat 2 may not be the best choice, if it comes down to that or letting the cert expire, use it.