The Best Classic Crew Neck Cardigans - Wardrobe Essentials Edit. A classic crew neck cardigan is one of the most versatile and timeless knitwear pieces you can own. Here are my top picks of the best cardigans to buy now, including relatively affordable options, perfect for building a wearable, ageless wardrobe that works across seasons. Check out my full edit on the Best Cardigans at www.beyondtheshopdoor.com LTKSeasonal LTKOver40 LTKStyleTip