What contemporary brand(s) do you think have the best quality? The worst? I've recently purchased a couple Kate Spade bags, and while time will tell, so far I'm really pleasantly surprised by the quality. On the other hand, I've seen some Rebecca Minkoff bags that look cute online, but when I see them in person, the quality seems to be hardly any better than bags I'd get at Target or JCPenny. What are your thoughts?