Hey man, cheers for getting in touch. It sounds pretty good overall. More or less how I'd expect a recto to sound out of that cab. Only criticisms are that the TS seems to be pushing the low mids to a point where they seem to almost be overloading the preamp circuit. There's a lot of that cloudy 500hz thing going on which you might find hard to seat within a mix. Other criticism is that it sounds a bit weak on the mutes, but that could be something reserved for within a mix. Sometimes the bass and kick add the punch there.
Great work though. I'm glad the amp is working out for you and your love for it growing each day. Mesa do make some amazing amps. Check out a Mark IV if you ever get a chance, I'm beyond impressed with both them and rectumfriers.
On another note, here's a dual rectifier clip a client of mine did not long ago. Unfortunately he post-processed it a little too much and sucked some of the beef out and put in too much high mid, but you kinda get the idea of the character. It speaks more toward the 'strength behind the mutes' and seating the mids differently that I was referring to:
http://dl.getdropbox.com/u/285689/Killshit.mp3__audio_mpeg_Object_Killshit.mp3