You are very welcome!
Headroom, It doesn't mater. I mean, -3 is what I usually get when people send me mixdowns and when they want the mastering done. (Usually they don't limit their mixdowns ofcourse)
The best mastering I have done is when I do the mixing myself and EQ every track and ofcourse use different techniques and effects and/or plugins.
Yes, my mixing and mastering is done through analogue gear. Though I use Pro Tools for viewing and placing the mixdowns and have it going out to my gear. I also do mixing in Pro Tools, but I have no limits. I may use ableton for its ease or even Adobe Audition for tracks recorded live that need disection and surgery.
What can I say, I live for this.