Good advice. Imo lockers are much better in snow and ice. Much easier to get going etc. Just have to know what you're doing.The E locker is nice in snow and ice. A mechanical locker in bad weather can be hard to drive. Both have there pros and cons I would pick the E locker you can simply run unlocked for snow and ice but in the mud and rocks lock it up by a switch when you need it plus in the ice and snow when you do have that bad day and find your self in the ditch you have a good chance of getting out when you hit the switch. just my 2 cents worth