Wheel Guard rim sealant is easy to use and works well. Diablo wheel cleaner requires agitation but works ok. I'm still trying other wheel cleaners but it seems to be pretty safe.
I tried their Grime Reaper degreaser (powerful stuff) but prefer OPC.
Citrus Wash and Gloss is good for stripping wax before claying, polishing and waxing. It cleans very well but I prefer other car washes for everyday use. You need to measure carefully for everyday use!
The leather cleaner stripped color from a leather hassock following their directions so be careful. I would not use it on Connolly leather seats. The leather conditioner seems to be pretty good but I'm not amazed.
I'm not a fan of their ProPolish, dusts too much. It's the only CG polish that I've tried.
I don't like Silk Shine interior dressing (look or smell). I've had so so success with their Speed Wipe which sometimes streaks on me. It does leave a nice glossy, anti-static finish when it doesn't streak. I prefer OIDE and recently tried UWW+ which is very nice as a waterless wash/QD replacement.
I just tried their new Glosswerkz glaze under some WG DGPS on my wifes hood to see how it holds up. It added a nice gloss look.
I have not not tried any of their waxes or paint sealants other than the Wheel Guard.
I prefer the Cobra WW MF glass towel to their WW MF glass towel.
I also just picked up a pre release MF polishing and a MF compounding pad for use with my PCXP. The compounding pad did cut faster than an orange flat pad. I just received both HT pads and Surbufs that I hope to use over the weekend in comparison. Sadly, it looks like the rains will be around over the weekend and I'm not sure if my plans will hold up.