Are contact treatments worth the money?

Designdude, good for you to go out and try this! Glad to hear you've had some results that please you. To clean and prep other contacts in your system, unless you see some obvious corrosion, isopropyl alchohol and a Q-tip will work quite well. That's what we use here. If you decide to use a contact cleaner like Caig DeoxIT, wipe it down well with isopropyl alchohol afterwards. Many that I've tried still leave behind a sonic signature that the alcohol does not.

As you discovered, expect all of your treated connections to require some amount of break-in time. The sound initially will vacillate between bright and edgy and somewhat muffled before it settles into what you described you heard on day 2. What I find are the following time frames: AC connections - 1-2 hours; high level audio connections - 5-7 hours; phono level connections - 20 hours. Playing complex music is the best method of breaking in the SST.
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The Walker treatment is organic; yahoo. (Cynical, yes.)

Reminded me to re-read Norman Koren's page: http://www.normankoren.com/Audio/
and his description, "Loose screws? Sometime in the late 1980's I visited an audiophile in San Diego. When he opened the door he exclaimed, "Norm! I've made the most incredible discovery! A simple modification that really improves the sound— opens it up, sharpens the imaging, and deepens the soundstage. I've loosened the screws on all my chassis. You gotta hear it!" He learned this tweak from a friend of his who had made a small fortune with a "CD enhancer" spray called Finyl. At the time, the ads for Finyl claimed it would increase the number of bits of resolution. His system sounded terrible.

I'd heard rumors that some audiophiles had their screws loose, but I never took them literally until that evening. Gordie Freedman evidently had similar experiences.
Maybe the problem was his cable lifters, which were made of plastic and only lifted his cables 4 inches. Here's what Mapleshade says: "Odd as it may seem, laying audio cables on an artificial fiber carpet will immediately dull the sound of your stereo. And that’s true for all cables, not just our Clearview wires. Unfortunately, the carpet is a huge mass of low quality insulation (dielectric). It absorbs and smears energy from the field around the wire. The effect is pretty grim, making music sound both dulled and harsh. A simple ear-tested solution is to raise the cables off the carpet by at least 8 inches. That’s exactly what our maple Triad does." You're apparently out of luck if your decor is oak or walnut. I gotta quit. You won't find any more of this stuff on my site. I promise.""

Sound familiar?

Xtreme AV's Quicksilver and Quicksilver Gold did it for me. In my system and experience, it betters the SST by a mile and appears to be much finer crystals w/ less residue. It was night and day difference on video application--fuse, fuse holder and AC blades in particular.

YMMV,

Kenobi

Another vote for Walker SST and detoxit. I use them both on every connection. I also had a low voltage light fixture with bulbs that have two small pins. They would regularly stop working and when unplugged the pins looked burned and pitted as if they were arching in the sockets. This went on for a couple of years, I had applied contact enhancing paste from my electrician and still no luck. I finally put Walker SST on last year they have not failed since.

ADAPT and OVERCOME!! SST and DeoxIT are weapons of opportunity in many applications. Chesty would be proud!!