I should have been more specific about the location(s) I shoot. Much of it is done on the Bonneville salt flats, and I live 120 miles to the east. The altitude is pretty constant around 4200 feet.
Bumps and jolts are an issue as you pointed out. Even driving across town things get bumped...
I have 2 Epson Stylus 1400 printers. I'm very happy with them. My older one uses a refillable cartridge system and my new one (only used on one occasion) has the standard Epson cartridge setup.
I want to convert the new one to a CIS, but I'm not sure which ones are recommended and which...