I've had it since I started driving. Saved my butt about 15 times - locked keys out, ran out of gas, car broke etc etc. If you use it once per year it will pay for itself. Not to mention free maps and guidebooks and many DMV services can be done there. When you can, get the plus - 100 miles towing instead of 7 or whatever the standard is.
A word of advice - when you need a tow make sure you ask for a flat bed. They will give you one although you may have to wait a bit longer.