I love my needle threader. I leant my machine to a friend once (never ever again) and she bent the little wire in the needle threader. Luckily I was able to take it apart anf fix it.
I hear all sorts of stories about the threaders only lasting a few weeks, but the key is to be careful with them and learn how to use it properly. Mine definately needs to be "just so", but now that I know where that point is I can thread it quick and easy every time.