You guys are still disecting brake lubes? Everyone with OCD please raise your hand.....mine's up first.
My opinion(worth everything you pay me for them), the fact that you are seeking out a brake specific lube puts you way ahead of the game (vs. petroleum lube).
Which is best, CRC/STA Lube, Permatex, Silglide, or Dow 111?
My guess is they all get the job done well for the enclosed metal/rubber guide pins. Exterior sliding parts - I think the high solids pastes I mentioned in earlier posts work better. Before internet education, many of us successfully used anti-seize sparingly on exterior parts.
Notes of interest:
The CRC has less than 2% of those moly/graphite/teflon thingies. Barely just enough to make any difference, but maybe good marketing ingredients to edge it above the Permatex.
Silglide's MSDS barely mentions silicone and is cryptic. Unlike the 111, Silglide turns from clear to yellow when exposed to air - it "seems" different than pure silicone. Yet, Silglide has been a brake mainstay in many shops for eons and is a proven performer.
Ford OEM specs. silicone dielectric grease for all caliper applications (in and out). That's opposite of the info presented in Critic's link to that excellent Carley brake lube article. Guess we can't believe everything/anything!
I was surprised the Permatex was only rated to 400 degrees. It IS a synthetic (not silicone).
Permatex just introduced a purple ceramic brake lube good for 2800 degrees. I suspect it is the SAME product Bendix gets from Ceramlube (also 2800 deg., purple):
http://www.permatex.com/documents/tds/automotive/24125.pdf
So, while there are excellent over the counter brake lubes, there are also "Gold Castrol" type brake lubes for BITOG members.