For those who need the best in 1st aid gear, AMK offers the Ultralight Pro.  This kit was developed with (and is used exclusively by) Yosemite Mountain Guides.  It's ideal for larger groups or programs but at this price would serve well as a basecamp unit for adventurous individuals engaging in higher risk sports.

The kit is designed for groups up to 10 people for trips up to 7 days.  It's housed in a water resistant Ripstop case but individual contents are further packaged in Aloksack watertight bags tested waterproof to 200'.  That makes this kit perfect for paddling or boating as well.

There's also a pull out "Ultralight .9 Kit" that can be dropped in a day pack for shorter excursions from camp.  Kit contents are designed to be among the most comprehensive available and include supplies to handle even some more severe wounds.  Some elements include large trauma dressings, CPR pocket mask, small paramedic shears, a SAM Splint for fracture immobilization, an emergency blanket and even a small supply of some medications.  You can view a full list of contents here.