Detail Spray - smells good, no streaks, good shine, helps drying
H20 Guard & Gloss - gives good shine and lasts a while. Easy to apply while drying.
In & Out Spray - awesome for stuff thats hard to get by hand like grills and ribbed hoses under the hood. Not slimy.
Super VRT - Nice to have one product that works well tires and other trim. Not too shiny.
Liquid Paint Sealant - Really easy to apply/remove and lasts a long time. Good shine too.
Wash mitt - holds lots of soap. Better than the Griots microfiber mitts I had before.

I have pretty much everything they make and there isn't anything I don't like, but those stand out to me. Actually I dont like their Tire Shine because it's too shiny but thats personal preference.

I've heard people say their shampoo is great - I haven't used enough different ones to notice much of a difference but I have no complaints about it. All their shit smells good too.

New stuff I haven't used yet:
Metal polishes
Paint correcting polish
Foam gun
Rinseless wash
Fancy new clay bar