I have very recently auditioned a pair of 8351B + W371A as well, also in my room. They are indeed very good. I may consider them if something happens to my Salon2 but I’m so content with them that I really can’t be bothered. Also, I still think Salon2 beats Genelec in bass. Then again that may be due to the room.
My room and the Salon2s aren't especially happy together, at least not without counseling. The best positions for imaging and mid/highs smoothness results in poor bass smoothness. I use a sub with DSP to fill in dips and raise the overall level by a few db (the Salon2s run full-range), but the placement of the speakers dictate the relative positions of the other furniture. I was hoping the 8361As would be more flexible for optimum placement. Acoustic treatments like you have just aren't practical for that room (I'm envious, actually), so I was thinking perhaps the Genelecs would mitigate the placement problems. Like you, I'm happy with my Salon2 set-up once I tuned it to near perfection, but I also admit to having a debilitating optimization disease, so I'm always looking for something better in any product I care about. I try to constrain myself, but it's like resisting Cherry Garcia ice cream, which is why CG isn't allowed in our home.
BTW, interesting tidbit... for determining whether or not imaging is good enough in a given configuration, I have what has proven to be a binary test. This will sound ridiculous, but for me it works, and has for about 30 years. On the original Stereophile Test CD from 1990, track 10 is a solo piano recording of Anna Maria Stanczyk playing Chopin's Scherzo in B-flat. The performance is very good, but the interesting moment is at the end of the track, where AMS's manager says "Well Done!" John Atkinson used a Calrec Soundfield microphone for the recording, and the manager was apparently standing well off to the left side of the piano. When the imaging of a stereo speaker system is very good, his voice comes so far from the left speaker it is eerie. When imaging isn't so good in a system, you don't get the same effect. Some speakers haven't been able to reveal this effect at all, and some need very careful placement to do it (like the Salon2s in my room). I left several dealers dumbstruck by this test over the years, and I find any system unacceptable that can't do it well. I spent numerous hours over a three-day weekend when I initially set up the Salon2s in our current house. And then the bass wasn't right...