I own the CAFS and the Sony M10 (they pair up very nicely). I'd have to say that there really isn't one "go to" setting - for me it always varies depending on the type of music and the house mix, etc. Lots of variables. I don't pay a lot of attention to the number on the dial, but rather I always adjust the levels so that they peak pretty consistently around -12 to -10, spiking at -6 but not much louder than that (the green led should be flashing on and off fairly often). So what the meter reading is and whether my green light is coming on (and off) is my main guide. If I had to err on one side, it would be the low side. I've recorded shows where I was certain the recording wouldn't be loud enough - but later in post I'm able to raise the levels significantly and the results are usually great. The M10's preamp is surprisingly good, in my opinion, for it's price point. So especially if you're recording at 24bit, you can get away with a lot of level boost in post.