"Which one is a better wax" would be a subjective answer in most cases as your definition of better/best can vary from mine. I haven't used Megs ultimate liquid wax, so I wont be able to compare.. but I can tell you that on a nicely prepared paint (wash, clay, cleanse OR atleast wash/cleanse) collinite will provide a reflective and glossy look. Collinite 476 has its own place in inventory where you can use it as
- a base protective layer (like a sealant and you're already aware it outlasts most/all sealants)
- use for tough weathers like the rainy season or winter months where you can't detail frequently. It will last you all those tough conditions very easily.
The water beading/sheet is great for this wax. I have had this on my hood for 2+ months and its still beading and sheeting like day 1. I will be topping it with something else soon but so far i've enjoyed using it.. Also, on this thread, you would see two people share their results with collinite on medium silver and both have captured it with high end pictures, so you can relate the looks.
Hope this helps...