I do lawncare part-time during the spring/summer/fall. I don't do any snowplowing. I'm looking to get a new truck this winter. Would a 2WD with a locking differential or limited slip be o.k. for my use? Does a locking differential work well in snow. We usually get 4-6" each snowstorm. The extra cost to go to a 4X4 for most manufacturers is $4K or so. Thanks.