If youre concerned about degrading your signal path by using a switch box, you may want to consider building your own "high-end" switch box with ultra quality components (i.e.: wire, circuits, connectors, etc.) Google "how to build an audio switch box" to gain access to a myriad of information (more than you'll want to know - isn't that always the case). You'll see that building one is relatively easy and you'll be able to "hot-rod" yours all you want. Maybe you can throw in a little silver wire, some $5.00 circuits and a few gold platted connectors then market them as the latest tweak for $2,000. You know someone would buy it.
Ben
Ben