Hi again,
In Colorado, where I am at over 5,200 feet, equipment does make a difference. I know that it's ultimately about products, guns, pressure pots, etc. My issue is that I spent over 2k for equipment that doesn't perform optimally at this altitude, and knowing this, I just wanted to have the best equipment for an appropriate price, outside of how I need to fuss with it and which products to use. Products will continue to change, some getting heavier as solvents are removed, and I didn't want to change equipment so soon again.
I do love the Apollo 7500 gun so will keep it. But, I also determined that I would like to have local support and this is not available for Fuji or Apollo. Again, no criticism at all of these brands (outside of the marketing lit for Apollo as related to altitude), I just determined that for me, in Denver, it's best to go another route.