Martha Argerich - Best of The Box Sets

Seeking some counsel from Martha Argerich fans.

I'm seeking a box set of Martha's work.  There are several out there.  Would like a good box set that covers a good swath of her work.  I assume these are CD.  Prices out there look pretty reasonable.

BUT, what I know from many experiences with box sets that repackage past classical recordings (and even other genres) is that the sound quality is often not very good.

So, can some of you recommend a Martha Box Set with high quality, high resolution, remastered even, recordings?

Would appreciate your experience.  

Thanks