Hi guys, here's a late conclusion. One of the guitars I play is a LP with 3 Super Distortion PUs. It's tuned down to C and I'm using GHS 11-70 strings. I recorded some guitars by using professional rigs but I remarked too much harshness on the mids, especially by Josh Middletone 2. I wasn't really into it by EQing cause' I want a pure sound in the beginning. What I mean is, later in the mix, you have to use the EQ to adjust the individual instruments.
These suggestions about parameter DEFINITION in conjunction with GAIN, POWER SAGGING and CLARITY works great.