The Gold is, not-ironically, for gold plated jacks and plugs. As Elizabeth suggested, the Gold is available in a 7.4 mL bottle with brush applicator (part no. G100L-2DB) for twenty bucks on Amazon. In that bottle is a 100% solution; the aerosol spray in a can is diluted, and messy. The red version is for non-gold surfaces.
Preferred Contact Cleaner and Contact Enhancer for Audio?
I have been doing some research on the topic of contact enhancers. I've used the Stabilant 22A contact enhancer. I understand other options occur in this space, such as the Furutech Nano Liquid, the Mad Scientist Audio graphene contact enhancer, and Cardas Contact Conditioner (to name a few). Any one having experience with any of these (or others not mentioned)? And what about contact cleaners? Are any contact cleaner worth considering (beyond 70% isopropyl alcohol)?