We know Samsung was looking to "copy" Apple's quality and desirability and I think that is a great thing to shamelessly copy. It's only too bad that other vends aren't following suit.
And it's not revealing that any company would use metal for the higher-end and plastic for the lower-end. Apple wasn't breaking any innovation walls with the 5S and 5C being metal and plastic, respectively, it's just how it naturally falls from a standpoint of feel and cost.
I think it's about time vendors stop copying the design of Apple (*cough* Samsung *cough*) or stop trying to create gimmicky, high-end devices (*cough* bamboo laptop *cough* Asus *cough*) but instead copy the reasons Apple has the customers and the mindshare they have. For once I am not saying "How fraking pathetic" but rather "It's about fraking time," and I applaud any one or any company that appears to be bettering themselves, I just hope it's more than simply using a better casing material.