Its tough to determine if something is "better", because we don't have any good objective metric to compare these types of things. I have one John Deere application with plastic/metal interaction and they recommend Super Lube Synthetic grease. The Super Lube compatibility chart shows it "excellent" with nylon. I always warn people that Superlube Synthetic grease is NOT compatible with EPDM rubber, a common type in automotive use.
My unsubstantiated vote goes for Super Lube. I also had no apparent problems using it on plastic garage door gears.
Another tidbit of info is that Silglyde is NOT a silicone lubricant similar to Dow 111 or the 3M product. Sil Glyde is castor oil based grease with a smidgen of silicone. Still, its an excellent brake lube.