Well, It turned out that the guitarist hadn't change the guitar strings as I told him, but he lied.
Bryan how old are your strings? New strings make big difference in the tone
edit: btw I suggest elixir (coated) strings.
In mixing LESS IS MORE! 2-3 plugins done right is a million times better than 1000 plugins trying to do everything.
Try the "God's Cab" impulses. Those are my favorite free ones at the moment. Use the NO-TS versions: http://www.signalsaudio.com/index.ph...id=8&Itemid=21