I'll gladly provide some more insight into the Permanon coatings. :dblthumb2:
1. Platinum: This is the most popular product in the Permanon line. It features the highest concentration of said Silicium (14Si). Compared to other Permanon coatings, Platinum provides the highest gloss and longest lasting protection. When used on hard interior surfaces, it imparts a smooth, tactile feel (no shine).
2. Diamond: From my understanding Diamond is formulated with both Silicium (14Si) and advanced polymers. It too creates a high gloss on painted surfaces, but not as much as Platinum. Upon speaking to the folks at Permanon, they mentioned that Diamond is very popular for hard interior surfaces (wood and aluminum trim) including clear plastics (gauge clusters, etc). It provides exceptional UV protection on said surfaces and doesn't alter the look or feel.
3. Car Supershine: This product came before Diamond and Platinum. It is an "all-around" coating; it is popular for use on exterior and interior surfaces. It is also very popular in the marine/RV world.
Platinum is the "shining star" in the Permanon line. it provides the highest gloss and the longest lasting paint protection. For those of you that have a fascination with touching your interior plastics, you'll appreciate the smooth, tactile feel that Platinum creates.
Hope that helps!