Thank you ALL.
But it’s too late to take further suggestions from you guys because I was out and bought the 32GB RAM already.
It’s okay as the price difference between 16GB and 32GB is about USD10 only.
Truly, I don’t hear any difference in sound quality with the extra memory.
However, whether it’s placebo effect or not, I do feel the machine runs smoother especially when listing my 5000 something CDs in album views, and sorting customized playlists, etc.
That’s 100% worth the upgrade in my case.
Thank you very much to you all again.