Don't buy chains just because your friend has them - that's exactly how people end up with gear sitting unused in a garage. The previous answers are mostly right that winter tires beat chains for your situation, but they're underselling one thing: chains genuinely shine when you hit ice that's been packed down for weeks, not just fresh snow. Since you only get a couple snow days a year, yeah, a solid set of winter tires will handle those fine and you won't need to wrestle with installation. But if those one or two days ever involve an unexpected ice storm that catches you driving somewhere hilly or remote, you'll wish you'd grabbed chains - so maybe the real answer is throw a used set in the trunk for twenty bucks, rather than dropping a hundred on new ones.