We make our own.......much happier since making the switch about a year ago. We are never out of a specific length or color b/c we make em. We never have to worry abut cables that are too long or too short. Best of all we do not have 277 cable SKU's to track. Also increases the profic margin greatly. You just have to make the choice of what bulk cable to start with and what brand of terms to use.
We use IXOS cap system. I know it looks cheap but it has saved our ass on several occasions (another post all together) Also very inexpensive (both parts and tools)
I'm Not an engineer, but I play one on TV. My handle is Tweety but I have nothing to do with the organization of similar name. I just had a really big head as a child so folks called me tweety bird.