I consistently use Opti-Bond, you can also tone down the shine by diluting it with distilled or tap water into a spray form and that has really worked well for me.
I just tried diluting it for the first time with 1:1 water to Opti-Bond and found it left a beautiful finish on tires. I decided I prefer the full strength un-mixed on trim but it is definately a killer product in terms of customizing ability.