The main system that I've used the Nomad Factory A.M.T. Multi Max plug-in on at the studio where I'm employed is Pro Tools HD based and is running on a Mac Pro computer with 10 GB of RAM and dual 2.66 Ghz Intel Xeon processors. We've also got a Neve 8068 console and Apogee converters. While it's designed for mastering, if your system can handle it (which this one can), it's suitable for mixing as well.
The Nomad Factory A.M.T. Multi Max is definitely the most versatile in the Analog Mastering Tools bundle, taking the best of the other two plug-ins in the bundle and putting it into one. I've used this one mostly for quick mastering jobs, but use the others more for mixing. It's not going to be your one stop shop for mastering, but for simple home studio mastering, it's definitely adequate as a plug-in and as a bundle as a whole. The bundle is incredibly cheap, as the Nomad Factory bundles give you some of the best bang for your buck out there. The A.M.T. Multi Max plug-in in terms of sound is definitely warm sounding for a plug-in and is incredibly versatile. I don't know if this bundle would be the best way to go in terms of home mastering, but they're great plug-ins to have around for all purposes...