IF you do get one, try to get the lowest axle gear ratio available. It should help with pushing. It will cut into your MPG a little though. Seems new Jeeps have higher gears than the old CJ's, and many new trucks as well have higher gears than their predecessors. This is all about mileage. Lower RPM's at highway speed = better mileage.
When I took my truck in to get my headlight/plow problem looked at, there was a guy there who was plowing with a Wrangler. He said it worked awesome. He was just tired of all the snow on his windshield, he was buying a snow deflector. He seemed really satisfied with his choice of plow vehicle.
I used to use two CJ and found that they are awsome as far as speed and manuverability,but they have trouble with a heavy enough drive train and keeping the windows clear with out aux fans or rear heat.Also if you are going to use one make sure its an auto the clutches are just to light for plowing.
My jeep works great, I plow everything with it commercail and residental, it does the job with out a problem. to be honest with you , I don't think you need a pick-up truck at all this thing plows as good as anything i've driven! I have a 1989 sahara model with a western proplow. I have beefed up the springs in the front and added a cooler for the transmission but besides this nothing, I don't even put weight in the back!!!!
we plowed with a 93 wrangler. the best thing in the world. you could go up a driveway and turn around and plow back down. very easy to manuever and to do small lots. had absolutely no problem with not having enough power.