The BATAC is by far my favorite.
I've had 2 CG BATACs, a 2007 SE BATAC (same as LE, but DC w/ diff slabs), a CG SJTAC, and since it was mentioned, a RMD.
I sold my SJTAC after I got the BATACs, mainly because the BATAC was the first TAC handle to be offered in Mags, and the Mags actually made that much of a difference to me. They make the knife seem much more solid in my hand.
The blade length also makes the knife feel better to me. It's less of a fighter feel and more of a utility knife feel. This in the 3/16" CG stock makes it one of the best knives I've owned. Sadly, the 2007 SE was sold as well, but between the two thicknesses, the CG won out easily for a dedicated user.
Oh, and the RMD? Well, it's interesting how different people react to different knives. I think some of the greatest knives I own are my BATAC, S5, and HRLM. My RMD should be right there with them, right? Well, it's not. Most people love them, and it would seem like the perfect knife on paper, but for some reason that I've not been able to figure out yet, it just doesn't have that "wow" factor for me.