Stand mount to floor stand.

Once I added the QLN Prestige 5 to my system the subs left the room.

I did keep them in for a month or so and decided to pull them and have not missed them. But that is also for my listening space. If I had this system in my living room that may be a different story.

proceed with caution.

subs and floor standers are a great combination...

I'd also say you should expect rather different presentations and although I may have preferred the R3 years ago, I'm sure probably in the Cremona M camp these days after many years of various audio pleasures.

If you can try them out easily, why not? I'd also say hang onto the subs. They can be crossed low and really disappear if careful. Have fun checking it out.

Fantastic speaker. They rarely pop up used.....  

I just heard I will be demoing them next week. Supposedly near mint condition 10-12 years old, asking $5500. I'm seeing them on line 6K-7K. I guess I'll decide after I hear them.