I am using AAMS, and it's been a huge help. I rarely match another EQ curve exactly, but AAMS certainly points me in the right direction. When I've got things sounding pretty good in the overall mix and I'm not sure why it's not quite right, I run an AAMS EQ analysis and compare it to a commercial mix. If my vocal or guitar isn't quite cutting it, I'll do an AAMS EQ analysis against an isolated commercial vox/vocal or guitar, and make adjustments accordingly. The usefulness of this AAMS tool is that it gives you a starting point, so if I notice that my vocal has several db less 3K but several db more 5K, I'll start messing around with those frequencies until it sounds better in context of my mix. There has been a lot negative said about this type of program, but I couldn't disagree more. AAMS has been one of the single biggest contributors to the improvement of my knowledge and the sound of my mixes.