Used all of them.
FD works very well! The new LT is just reformulated FD to clear new OSHA guidelines and they didn't change it that much. Just get a really good spray bottle and spray/wipe away!
EK: Well, it's like a floor wax. Difficult to spray on w/o producing small beads that dry.. like small beads. Therefore, I use it on all wheel wells and suspension areas as it dries hard! I switched to 303 to dress engine bay hoses and parts.
S Dressing: A silicone dressing for plastic, vinyl, rubber that gives a good gloss. Apply and wipe off for more of a less glossy finish. Good for seals on doors. Keeps them nice and supple. I use a food grade silicone for all my dive gear rubber.
As for silicones, some are benifical in obtaining that wet look you are after. Just bad for bodyshop work as it will cause fish-eyes in the paint. Some stay on longer for that slick feeling too.
Enjoy the Detailer line!
Regards,
Deanski