That's a lot of money for 5 gallons. We use Warsaw ultra thick water based silicone. It is thick, like any thicker and it would be a gel. Zero sling, even on the concrete at the application site. We get about 500 cars per 5 gallon and it's about $100 with tax.
WC Thick tire shine, a water-based silicone tire dressing designed for use in online tire shine applicators. This thick, low-slinging formula provides
warsaw-chem.com
I can't tell you if it's the best because it's all we've ever put in ours but it shines a wet tire evenly and lasts. I could probably shut off the silicone completely and shine 100 cars with just the what is on them as it goes a long way.