C1 is an excellent program: its primary strengths are rock solid tethering with Nikon, Canon, Phase and Leaf Backs plus top notch LCC corrections and a color editor that is superb.
It is not an all-in-one program like Aperture or Lightroom.
I prefer the files from Capture One over all others. I have used it for very long time but also have experience with Aperture, LR, RAW Converter, Phocus, Nikon's software and Camera Raw. To me: the colors in files that I have converted in C1 are cleaner, truer and more to my taste than what I am able to achieve in other programs..
Some prefer LR and I've heard from friends that the tethering capability of LR is significantly better than earlier versions.
If you want to catalog your images you can use LR as your catalog program or Media Pro (also previously known as iView/Media Pro). Media Pro is a much stronger program than the previous versions but the catalog is not integrated into program like Aperture or Lightroom.
I think the key to all of this, is to find a program you like and stick with it. Learn it in depth and don't worry about the others. LR and C1 are both excellent programs.