My opinion....
I don't think you need or want a 16k winch hanging off the front of your truck, or the back for that matter. I feel in far too many cases people overbuild, overbuy, and over carry stuff in there expedition vehicles. Very rarely if at all you are going to need 1.5 times your vehicle weight in pulling power. You have to remember that you are not lifting your entire vehicle. Yes, if your stuck in deep mud or deep snow you can get yourself in some trouble. But this is where a smart head and a strong back come into play. More than likely you are going to need to get out the shovel and dig a bit to loosen things up.
I think for a full size truck a 10K winch is more than enough.
I remember reading an article where they attached a load meter while winching and doing recovery on various vehicles. Very rarely did the strain guage even approach half the capacity of the winch.
I think your better off playing it smart and purchasing a few snatch blocks. This can allow you to double or even triple your pulling force for that rare situation. You can also use these same blocks for setting up a variety of very useful rigging situations like setting up a trolley to prevent you from sliding sideways on a hill or off the edge of the road.
In all honesty unless you are very prepared and experienced off road, you might be better off mounting the winch in the rear and pulling backwards 99% of the time. With a heavy expedition vehicle most of the time if you get stuck going forwards and NEED a winch extraction you are going to be better off finding an alternate route. If you get stuck and have to winch forward the chances are you are going to need to winch again and again.
One last thing....
One of the most innovative setups I have seen is the Vector winch system on the IBEX vehicles from GB. They have a mid mounted winch behind the front seats under the body. The line is run through two pulleys at the rear then back to the front of the car along one of the frame rails. This allows you to have a pre-set double line pull to the rear with the end of the line fixed at the front, or a single line pull to the front ( or rigging a double line manually ).
Here is the patent.
http://patents.ic.gc.ca/cipo/cpd/en/patent/2307601/summary.html
bad pictures....
http://www.ebroadcast.com.au/ecars/Foers/Winch.html
I know the IBEX runs a reinforced frame to keep everything true. It has problems, like you can't see the winch drum, the drag if you want to pull line out the front is challenging, etc.