Besides, I think that the Super 7's are a strong candidate for a "forever" speaker.
Yes. Oooohhh yes!
Some other things that are great about the Super 7's that rarely gets mentioned - They are big speakers but they work well in small rooms. Because the are OB, they also work well in non-symmetrical rooms. Because they are fairly directional, they work well even close to side walls. They are tall but also narrow and not deep, so physically they fit into a room pretty well.
They are also the opposite of the "ruthlessly revealing" speakers that "show you how poor the rest of your system is". They are one of the most detailed speakers I've ever heard, but they are not analytical at all. So they allow you to actually enjoy the sound of your system, regardless of how "good" or "bad" the rest of your system is. When you are ready to get higher end equipment, they scale right up. So the rest of your system might evolve, but the Super 7's will likely stay put.
If you're comparing them to the Super V's, the Super 7's beat them in areas like soundstage depth, scale, imaging, microdynamics, tone, transparency, refinement, and just sound 'bigger'. The integration of mids/highs is also much better. The bass is the same, of course.