I have a ZKC comp bar, and it's my only one. I have been deciding on getting a second bar to use for the strength lifts, but also as a second, back-up bar for when people come over to train with me.
If it were me, I would get a less expensive weightlifting bar. That's what I'm planning on doing once I have the money for it. Now, I don't know which one I'll get, but that's where I'm going.