Really neither... truthfully, with our finances I have to do this at the right time just after a paycheck or there never seems to be enough extra. I will try to go this weekend and see what we can find.
You might be able to get something used at Amazon Market Place or eBay for less money than new.
But it might be a better experience for your kids to remember if they go out with you and pick something out and you all mail it directly to the soldiers in Iraq.
You don't have to go overboard. One game will mean a lot to the soldiers over there, especially if you include notes written by your kids.