Interesting. I have both AR and Mono, as well as BJC and others. Hmm, I should see how loose my Mono sub cable is . . . oh wait nm, I don't use it anymore, lol . . . (changed out consumer sub for diy/commercial).
The one type of cable with Mono, that I have seen, which can be loose happens to be their optical cables, though I have found that this is just as dependent on the component's terminal itself. However, for the uber low pricing, it's hard to complain. Mon$ter has typically the tightest I have seen, both RCA as well as optical.
I <3 Monoprice.