I tend to avoid compression. I try to get transients right at the source, and I use bus compression very sparingly. I do however route all sorts of things through my Korgasmatron (dual analog filter with clipping circuit), and I like how if you get the settings right the big transient peaks get flattened but sort of replaced by a nice analog clipping sound.
So my question is how you feel your transients are treated by the Heat. Do you use Heat as a dirty limiter? Do any of the circuits have soft-knee characteristics?