I've used a lot of different stuff over the years, jacks, straps, chains, winches, not to mention logs, rocks, and credit cards to get trucks unstuck.
But of all the tools out there which do you feel is the most important thing to have along when wheeling? I'm torn between winch and strap, as one will get you out when alone, the other is much cheaper but requires having a friend along with another truck. what's your choice?