I currently am using 9 with a few additional that I am currently evaluating. My system concern is becoming too dynamic which is so source material and location dependent. My best guess to this point for my rig is somewhere between 10 and 13? Time will tell.
Everyone’s system/systems and electrical setups are so subjective that it would be difficult to project what’s right for anyone.
What’s nice is they settle in very well within a couple days with no break in. This makes it very easy to even try 1 or 2 at a time and do careful testing to find what’s best for you.
LP