I also have a Leatherman  Wave in my truck’s glovebox for any vehicle issues or minor work. I have found  that the most important feature for my line of work is the folding saw that  these multi-tools provide. The other features are not as critical (of course,  that toothpick feature is nice after a dinner of wild game....). There are so  many variations of multi-tools so look at the features you need the most- do you  really need scissors or corkscrew in the wilds?
These tools compliment my  4” fixed-blade Mora Knife that is my main “working” blade when teaching and when  I am on the trail. I would recommend going with a reputable brand when  purchasing a multi-tool like Leatherman, Gerber, SOG, or Swiss Army as there are  many cheap spinoffs and the last thing you want in the backcountry is a critical  tool that fails you. 
Also, keep in mind that a  multi-tool is not a knife it- is a multi-tool! So, carry a quality  fixed-blade in addition to a multi-tool. The fixed-blade will allow you to split  firewood, whittle, and handle the heavy-duty chores associated with wilderness  living. Carry at least two blades and remember the motto with critical  life-saving gear: “Two is one and one is none.”
Enjoy the Wilds!
Tony Nester
Ancient Pathways, LLC