Thanks for the replies. I have compared Kee, Robbins and EZ-On, I don't recall any noticeable difference in the material, but will double check my reference tops.
Knew about the brass zipper, thus leaning to EZ-On, weird the economy top (they are cheaper, but a good top) come with the correct brass that the bog boys (Kee, Robbins, charge more for...) did not know about the trim material, the lack of an OEM to compare to ... not many originals I am aware of here in Australia I have access to.
And I install my own, not a really hard job, just fiddly and time consuming to do right. A pro can do it faster, but as mentioned below I've a few mediocre installs someone paid a lot of $ for. Especially here in Oz as rates are high, easily $1000 for a base install , and most don't do the rear top pads as "they aren't required" (translation, "I don't want to take the time to add them because its hard and I'll have to add $500 to the quote!"). I've fond doing my own you do some across issue that sometimes need repair/rework and I'd bet most pros just "install the top" and don't take the time to really check out the frame and adjust repair as many often need.
Can anyone comment on the visual difference of the color of the material each manufacturer uses and if one or any are closer to the original parchment white for a 68? And if well liners and boots match (forgot to add that part of the question last last night when posting the original question)?