Certainly worth getting a listen if you can find one. I will share, however, that I originally had the Super 7 XRS with both a ferrite driver (no whizzer) and an alnico driver (with whizzer). For me, the ferrite was too bright, even without the whizzer. The alnico was much more pleasant. In addition it had, what I call, texture. Reeds, like sax, voices, guitar strings, all had a richer sound. I later upgraded to SAMs and those same characteristics were even more pronounced. Next step are the SAM HOs that Louis is now building for me.
I have monitors and the XRS versions would definitely have a bit more bass strength and the HO versions should help in that regard as well. Still, I use bass augmentation.