@Bahamayellow
I like the rens better then the 9.1, or the 9
They're more accurate, at the cost of some Ooomph in the bass (but again, it's actually inaccurate Oomph)
The HE EMIM is a far better transducer then the polygraph, imo, and the 'midbass' coupler is completely invisible audiowise.
Again, you'll give up a bit of Grunt down low, but beleive it or not, it's inaccurate, at least compared to the Ren 90s.
I was listening to mine last night, and was simply amazed at how damn good these sound!
I forget, how big is your room where the 9.1 are? The one thing about the rens to my ears is they do better in a medium-small room then a big one. They struggle to fill a big room in comparison to my RS IIb.
p.s. you replied within the quote brackets above, so you might want to edit that.