Hey Mr Bill,
From my experience I have never been a big fan of Cambridge and Armortec. Their spin is that the Armortec keeps the paver color longer. I believe they don't have aggregate in the top let's say 3/8" of the paver so when it does wear, it is not as noticeable as other brands. I have not found this to be true. Older pavers, and certain brands don't weather as well as some newer or better brands.
Everyone has a brand that they like to work with and prefer over other brands. By me,Techo and EP Henry are the premier pavers, even though Cambridge is made right here in northern NJ.
From a walker and safety point of view I would stay away from tumbled pavers and pavers that have a textured or dimpled surface. They will have larger gaps in-between the pavers and could present a risk. Otherwise, you should be fine with most pavers that come from a mason supply yard (not big box stores).
Also, "kudos" on your post about fence installation. Very well written and very informative. I don't think someone who installs fences for a living could have presented a better description.
FYI - spelling is definitely not a pre-requisite to post on this site or to get a response, so don't worry you didn't violate any protocol or upset the Cambridge people (well maybe I did).
I hope this helps and you should hang around, it seems like you have a lot of good info for a "homeowner"
