Audiophile Record Labels

Classic Records
Mobile Fidelity
Simply Vinyl
Music on Vinyl
Sundazed
4 Men with Beards
Pure Pleasure
Analogue Productions

For Pure Pleasure, might want to add Music after it as a google search for Pure Pleasure bring up something completely different.

( Pure Pleasure Music )

I have very good recordings from Linn, Hyperion, Sheffield Labs, Telarc.

Dorian is another

ECM recordings are always of the highest quality (http://www.ecmrecords.com/Startseite/startseite.php). Naim also has its own label with very good recording quality (http://www.naimlabel.com/)

Reference Recordings in my opinion are some of the finest.

I have extensive experience with Telarc, Mapleshade, Sheffield Labs, Chesky, DMP, Audioquest XRCD, etc.

Mapleshade is sort of an organic type of sound.

Chesky Ultimate Test and Demonstration CD is a great tool to evaluate your system and develop good listening skills.

Telarc, DMP, Reference Recordings are all incredible!

If a particular recording is available in XRCD or XRCD II sometimes it is a huge step forward, sometimes not. For example, Dire Straits Brothers in Arms is WAY better on XRCD II while Eagles Hell Freezes Over is only slightly better and maybe not worth the $40 on XRCD II version.

(just to be forthcoming I am a dealer for Chesky and Reference Recordings)

I second anything by ECM. Consitently top-notch recordings. Mapleshade,Chesky and some Telac as well!

Add Harmonia Mundi and Bis to the list. I'm assuming that you're not going back to the early days of stereo (RCA Living Stereo, Mercury, Lyrita, etc.).

In addition to MoFi's list I would add:
The 180g Warner Bros
Cisco Music (but i think are done)
Naim
and the new Rhino label

Nobody mentioned MA recordings.

Wow, thanks for all the responses everyone!
I'll throw another label into the mix as well. I purchased a Rhino Records version of Al Stewart's "Year of the Cat" on the recommendation of a friend (as it's one of my top 20 rock albums) and it completely blew away my Arista version.

Thanks again.

Yes, Rhino is generally very good.

I've also been pleasantly surprised with overall quality of various classical vinyl titles I have encountered on the Musical Heritage Society label.

Alia Vox for early music (Jordi Savall's label), and a big second thumbs up for ECM.

fone does great classical recordings as well

Here's a few more , I don't believe I saw listed above.
Most of the below listed are in existence/business, some are not but available on the used market such as Discogs 

Speakers Corner (http://www.speakerscornerrecords.com/)

Friday Music (http://www.fridaymusic.com/)

ORG - Original Recording Group (http://originalrecordingsgroup.com/)

AudioQuest Music (https://www.discogs.com/label/47596-AudioQuest-Music)

AudioSource (https://www.discogs.com/label/500355-AudioSource)

Century Records (not the same as Century Media Records) (https://www.discogs.com/label/19314-Century-Records)

Chesky Records (http://www.chesky.com/)

Cisco Music (https://www.discogs.com/label/117599-Cisco-Music)

Crystal Clear Records' (http://www.crystalclearcds.com/)  (https://www.discogs.com/label/58638-Crystal-Clear-Records)

East Wind Records (https://www.discogs.com/label/498936-East-Wind-Records)  (http://www.eastwindimport.com/) 

New Haven Records (http://www.newhavenrecords.com/)  (https://www.discogs.com/label/60636-New-Haven-Records)

Groove Note (https://www.discogs.com/label/213608-Groove-Note-Records)  (http://www.elusivedisc.com/Groove-Note/products/346/)  (https://world.jazznearyou.com/groove-note-records.php)

Opus 3  (http://www.opus3records.com/)

Reference Recordings  (http://www.referencerecordings.com/)

Super Analogue Disc (https://www.discogs.com/label/830644-The-Super-Analogue-Disc) (http://audiophile.elusivedisc.com/audio/Super-Analogue)

Tacet  (https://www.discogs.com/label/89800-Tacet)  (http://www.ccvinyl.com/)

@tgyeti 

Ref: Al Stewart, Year of the Cat - Rino

I thought you may be interested in the following Al Stewart LP's
All recorded from original RCA and Janus master tapes by Joe Reagoso
and pressed at RTI
http://www.fridaymusic.com/al-stewart-zero-she-flies-amp-orange
http://www.fridaymusic.com/al-stewart-year-of-the-cat-amp-modern-times-cd
http://www.fridaymusic.com/al-stewart-year-of-the-cat-lp
http://www.fridaymusic.com/al-stewart-past-present-and-future
http://www.fridaymusic.com/al-stewart-time-passages-180-gram-audiophile-vinyllimited-anniversary-edi...

You may find that The original Janus Lable , Japan/OBI pressings to be of high quality. I don't have any, so I have no evaluation of there sound, but If interested, you would probably be able to find some info on the net.

I was looking at Discogs, and found that there are a hundred different versions of Year of the Cat
https://www.discogs.com/Al-Stewart-Year-Of-The-Cat/master/90235

Also there is a Mobile Fidelity Sound Labs pressing of Year of the Cat (out of print)
Al Stewart - Year Of The Cat (LP, Album, RE, RM)
Label:Mobile Fidelity Sound Lab
Cat#: MFSL 1-009  

The Sound Liaison label is one of the best sounding younger labels.
Very impressive sound quality, reminds me a bit of reference records in but maybe with an even better sense of placement.
 Highly recommended.
http://www.soundliaison.com/

Stockfisch Records has some great artists and recordings

http://www.stockfisch-records.de/sf12_start_e.html

For Jazz
Mosiac Records
Music Matters
Heavenly Sweetness 

Yarlung Records is consistently outstanding. Hard to beat.