Hi, has anyone had a chance to compare these mixers? I'm interested in buying one and am wondering how the mic pres and overall audio quality compare. The M8 uses the same pres as their Ghost production console and the EPM8 uses the GB30 preamps from their LX7ii & GB live consoles. Which one would you recommend for studio use? (I'm not interested in the Mackie ONYX because it's well out of my price range