Used baby stuff vs new?

Sarah
My husband and I got in a debate yesterday about used vs new. I'm all for used baby clothes (at least some of them), but other than that I want new. He was like, you can't possibly want new for something like a car seat. I was like, ESPECIALLY for a car seat (I think it would be safer - may be a wrong assumption). He looked at me like I was crazy for wanting a new car seat. We make very good money too so I don't know what the issue is. We can easily afford it. My husband's mom is like the garage sale queen though so I wonder if any of that is rubbing off on him... What are you guys doing?