All EZRJ45 connectors eventually fail because they are open on the end allowing environmental contaminants to corrode the connection, don’t use them.

Believe it or not, my self and several other installers  have found no performance difference between using standard RJ45’s that are designed cat 5 in place of a Cat 6 RJ45’s connectors. The cat5 connector version works great despite all of the moaning and groaning you will hear from the “experts”. What is worse a cat 5 connector they say wont work (but works just fine) or a cat 6 connector that is not assembled perfectly (which is most of the time)? True it is a tight squeeze but after a bit of practice it takes only a little bit longer to put the connectors on cat6.