Exactly. That being said...
I have Denise and I don't care for them and haven't used them since I got my Options. I like Addis, but I think the Addi Clicks are way overpriced for what you get, plus I don't honestly see much difference between them and Options.
I have never had an Option needle come unscrewed. I use a small piece of rubber shelf liner to tighten and loosen. I've had one needle pull loose from the cable and my DH hot glued it back in and it's been fine since. KP had great customer service, too.
I would like to say also that I don't think it's a quality control issue with KP needles. It's the sheer volume of needles/sets sold. You're bound to have some issues.