Another place for kits is Wilderness Medical
http://www.wildernessmedical.com/Comprehensive kits depending on what you are doing and how much you want to carry. I carry the grasshopper when hunting with a backpack and the Humbug II is for the vehicle. You will have to talk to your doctor about meds that you want to carry (couple of antibiotics, intestinal parasite meds, pain management, epi pen, etc) depending on where you are traveling. One thing to add is a dental kit and dental wax.
Other than that, I second the earlier comment about getting some medical training. A lot of damage can be done by the untrained trying to open an airway or using a tournaquet.
Or you can keep researching the contents of various kits and build you own with items that you/your group are comfortable using. Simple and quick to use is always best.
rah45 - those are very nice items, thanks for sharing.