I think it depends on the line. I have the Signature Duffle when they first released it, that when I carry it, I still get compliments, even though it's 4 or 5 years old. I love my luggage, it's classic leather and and not trendy, and I think will always be classic.
Coach leather used to be soooo much better than it is now. I think the quality started going down when they introduced the bags with canvas with the C's. I think Coach used to be about great leather. Now it's more about brand recognition. I have a Coach bag that I bought years ago. The leather is like buttah!! Can't find that any more.