Thanks for the information.
As you know, not all rigging wire is created equal, and rigging wire is made in metric and inch dimensions. I noted that you did not specify, but I am fairly sure that the rigging wire available in Seattle and possibly Trinidad are inch. My experience is that when riggers use inch dimensions, they use slightly smaller wire than the original metric dimensions than Amel uses.
Additionally, Chinese stainless steel is popping up everywhere. Did you ask for a certificate of origin or some other proof of country of manufacture? Also, I have seen many riggers use existing Amel rigging parts when re-rigging an Amel because they cannot source some parts, especially the small turnbuckle on the forestay.
Over the years I have seen many marine suppliers cave into the price pressure placed on them and when people only compare prices. Many of these suppliers give their customers what they ask for...the lowest price without regard to quality. The best examples of this are the very low quality products offered by Worst Marine.
Lastly, I am familiar with a Super Maramu owner that used the wrong rigger, who used bad materials about a year ago. He is going to sail to Martinique to have everything replaced again. Martinique isn't the only good place to replace Amel SM rigging, but they certainly are the most experienced on this side of the Atlantic. I have a quote from them done in 2016 for 9032..34 Euro. I am going to write Gaetan and ask what the difference is. I will CC you of the email.
I believe that you are on the right track, but there are other variables that you need to address in your comparisons.
Your current rigging lasted 22 years and on a recent circumnavigation. There has to be a reason that Amel OEM rigging outlasts other rigging by almost two times the norm. The OEM rigging is available in kit form and ready to install from ACMO, the OEM supplier to Amel for your boat. The kit includes everything down to the washers. Email philippe"at"acmo.fr
I hope this helps you.