Quality switchblade combs?/Knives in general?

I'm sure the older members probably remember these as kids...every guy probably does actually, but I'm referring to the switchblades that flick open into a comb.

Does anyone know where I could buy one of these that wouldn't break directly out of the box? All the ones on Amazon have low reviews, and they're probably all the same, but I figured it wouldn't hurt to ask.

Also, switchblade knives are illegal if I recall, but stiletto knives aren't? How exactly do they differ? A quick blade is a quick blade, and I've got a Kershaw that can attest to that lol.

Kegan