High quality CDs

@spenav will any CD player like the Luxman D03X be able to play an XRCD? I have an older Rotel CD player that plays HDCD.. Do I need a special decoding player?

Stereophile and The Absolute sound review recordings each issue. 
 

Of course a good streamer will allow you to find recommended ones from, for instance, Qobuz or Tidal… and look up recommended albums from magazines… never getting stuck with something you don’t like.

@rman9: And the HM albums are by-and-large very well recorded. Plus their artist roster if fantastic: lots of the best "historically informed/original instrument" musicians in the world. The repertoire includes lots of Early Music and Baroque, along with some Classical (Mozart, Beethoven, Haydn, Schubert) and Romantic.

In the 1990's Harmonia Mundi U.S.A. had parking lots sales on Sundays at their Westwood (or was it Santa Monica?) office/warehouse. They sold newly-discontinued CD's and LP's for five bucks each. I bought a lot!

I listen exclusively to Classical.  Where are you getting your CDs from?  Maybe your system needs revamping.

  Anyway, Classical Labels that are especially known for good Sonics are, inno particular order:  BIS, Reference Recordings, Decca, MDG, Pentatone.  These labels tend to bill themselves as Audiophile, and most of them are sonically outstanding.

  The so called Major Classical labels, besides Decca, are Sony and Warner.  Like Decca, these current mastheads comprise many labels that were until a decade or so past were independent with decades long recording traditions, such as DG and Phillips (Decca), RCA (Sony), EMI , Erato, Telefunken(Warner).  Then there are the historical budget labels such as Naxos and Vox.

  DG was thought to be exemplary in the lp days, but most of the  records from their heyday show hot treble and limited bass.  Naxos and Vox always suffered from poor engineering but there are some exceptional finds there.  Sony and RCA early digital transfers could be problematic but later remasterings are usually exceptional.

  My recommendation. : It would help if you told us what sub genres within Classical you are interested in (Baroque, Opera, etc. or just name Composers) and then I and others will flood you with recommendations.  Secondly, use a streaming service to audition a recording before buying 

I will second the recommendation for BIS CD's as their CD's are very very dynamic so watch the volume control as when something starts off quietly the speaker cone can be billowing when you get a climax. you will definitely not be disappointed.