Our local club used to allow only the Trinity Zip Free, but we have since changed over to the TQ Orange line or the Corally Jack The gripper compounds. The strong smell was the deciding factor to switch from the Trinity products. They also all seem to be cancer causing agents which is a big concern as well.
The TQ sauce goes onto the rubber tires nicely but it does have a distinct citris small and getting the can to seal properly is impossible.
I have to keep mine in a zip-lock bag otherwise my entire pit box ends up coated. The cotton dauber is nice but why the heck isn't it incorporated into the lid like other brands? Dumb move there.
The Corally product is virtually odourless and the can does seal without leaking. Thumbs up for that. Areas that could be better are the applicator which is nothing more than a cheesy plastic brush and this sauce doesn't cling to rubber as well as the TQ product. It tends to sheet off the rubber tires which negates its effect to a degree.