Any preference based on experience? The original pop lamp setup is not an option for me, unless replacement parts are available. On hand, I have the hard metal legged #44/47 pop lamp sockets typical in early Sterns, as well both versions of the #555 wedge (hard metal legs and soft wire legs). The soft wire leg 555s are closest to the originals, but I dislike their "floppiness" in general. Any problems using either of the other two varieties? Height issue? Thanks