doing some research trying to decide on a good recovery strap. i have a connection at ORW and was looking at the trail gear straps. how does one decide which one to get? there is: 2"x20' 18,000lb cap, 2"x30' 18,000lb cap, 3"x20' 35,000lb cap and 3"x30' 35,000lb cap. i have a 6cyl grand cherokee...