What are your go to LP's for evaluating new gear or new tubes?

@rauliruegas 

Not sure what you mean about why the Linn, if that is a question or not. Just something I always kind of wanted. Been having issues with various old turntables, VPI needing bearing (off to VAS for repair), most recently was using my old AR (OK not great). Found the Linn at a reasonable price with Ekos arm, Lingo PS, Cirkus bearing. Not sure about any other upgrades. The cartridge sent with it is an old Linn Karma but has been very pleasant listening so far. 

Taking notes on all suggestions. Thanks.

Johnny Hartman. "Easy Living", on Bethlehem stereo.

"Laughing" from "If I Could Only Remember My Name" by David Crosby.

David Lindley's 1981 album El Rayo-X. "Mercury Blues" is a killer track.

Shostakovich Tenth Symphony Karajan/Berlin or the previously mentioned Reiner/CSO Scherazade.

  I listen primarily to digital and the OP is analog but the above are 2 LPs that sound great and the works test every bit of the orchestra.  For organ I would find a good copy of E Power Biggs Bach at the Thomaskirche.

  I can’t resist telling the OP that yes, streaming and all forms of digital media can sound ‘as good’ as vinyl, and IMO usually better