Also, how does Meguiar's #21 compare to Blackfire Wet Diamond all finish paint protection, WDGPS, or Jascar Powerlock. Is it in the same league as these?
I have never used ultimate liquid wax but I have used m21 and WDGPS. M21 does contain some cleaners even
Says on bottle and meguiars home page visually eliminates fine searches, which it does to some degree.Both m21 and WDGPS both have good longevity but I will give the edge to WDGPS in that respect. WDGPS is given an average durability of 6 months but I don't wait for the protection to wear off. So I always apply a new coat of wax or sealant every 3-4 months.
Love 21. Not sure about cleaners but when applied by machine you will notice soiling on the pads. I think that may have more to do with the mechanical cut of the pad. It does fill defects real nice though.