Yah... I picked up a bunch of the Dayton rear/side entry screw on style a few years back at the Dayton Hamvention (HamRadio swap meet). Parts Express always has a BIG booth and they had some with water-damaged packaging. They are regularly $10 for 2 pairs... they were selling them for $2 for 2 pairs. I bought 4 sets (8 pairs). I went back later to get more but they were all gone. They've worked well for the past couple of years but they lose tension slowly, not enough that they come lose, but after 6 months they're a little wobbly. The black finish is also starting to rub off on some. I'll be replacing them with the Monoprice rear-entry style plugs when we move to our new house. They feel alot higher quality and the way they're designed I don't think they'll lose tendion at all.