The Bears kicked off free agency by signing a versatile tight end and a Pro Bowl left tackle, but other needs remain. Sports editor Jon Styf and columnist Tom Musick discuss:

Musick: What’s one of the best purchases you’ve ever made? How about one of the worst? I’ll go first. When I was a kid, I bought a Roberto Clemente baseball card that made me happy beyond belief. When I was a grown-up, I bought a used elliptical machine off Craigslist that broke within a month.

Styf: The Bears’ worst recent purchase was Jay Cutler. Their best, Brandon Marshall. I see what they’re doing, with subtle offensive improvements. But their defense isn’t getting better, it’s getting worse. It’s like those Bose headphones I bought that look and sound cool in the store but ultimately are as fragile as .... well .... Kerry Wood. The free airplane ones last longer. You think this is going to solve all the Bears’ woes. But they’re just creating new headaches by neglecting what’s made them good, instead allowing it to unravel.