I was very disapointed in the Atlona's. I wanted to try a side-entry configuration, and these claim to accept 12 to 18 gauge wire. I was using 14 gauge, but the gap between the brass "spacer" and the end of the connector was so large the wire just fell out. If I doubled up some 12 gauge, it seemed to hold pretty well. But for anything smaller, that little spacer is just too short.
The GLS are great.