Looking at them i would say they are a newer version. The SC unit looks very nice!
I've had them before (older version though) and they are very good. I've got the Sharkoons now which are basically the AX Pro's rebranded and i couldn't be without them!
As for settings, on the volume control i usually have bass set to the lowest green light it will go. I have rears set to 3 clicks into the cyan. And the other 2 lights are set to the highest blue level it can go. This probably all sounds like gibberish but once you set them up you'll know what i'm talking about
As for the time delay settings, i can't remember exactly what i have set it too. I'll take a look at some older posts to see if i can find them.
Also, to find the right settings for you, go onto one of the many maps with chickens in either mw2 or mw3 (Karachi on mw2 was what i went on) and kill all the chickens bar one, stand directly in front of the remaining chicken and close your eyes, spin around, stop and you
should be able to pin point the exact location of the chicken without opening your eyes. Tamper with the settings until you find what works for you
