Hi Dave_C,
You certainly made a great quality choice … and congratulations on your new mattress 
I’m looking forward to your comments and feedback once you’ve received it and have had the chance to sleep on it for a bit.
The choice between different types and blends of latex is also more of a preference and budget choice rather than a “better/worse” choice and any type or blend of latex is a durable material relative to other types of foam materials such as polyfoam and memory foam regardless of the manufacturer that uses it in their mattress. There is more about the different types and blends of latex in post #6 here.
Outside of using latex layers that are too soft for someone’s body type, actual defects in the latex (which are uncommon and will generally show up fairly quickly in the first year or two), or using an unsuitable support system under the mattress … any type or blend of latex won’t generally develop premature visible impressions in the material.
Phoenix