My personal favourite recordings. Not all ones I'd expect people to drop down and worship, or even like the music, but I return to these very frequently:
Schubert - String Quartet No.10, 13 (Mosaïques Quartet, Astrée)
Vaughan Williams - Violin Soanta, String Quartet No.2, etc (Nash Ensemble, Hyperion)
Bantock - Celtic Symphony, Hebridean Symphony, etc (Handley, Royal PO, Hyperion)
Vasks - Violin Concerto, Symphony No.1 (Kremer, Kremerata Baltica, Teldec)
Bax - Orchestral Works Vol.5 (Thomson, London PO, Chandos)
Bartók - Violin Duos (Keller, Pilz, ECM)
Britten - Frank Bridge Variations, Purcell Variations, Simple Symphony (Britten, ECO, LSO, Decca)
Cooke - Symphony No.1, String Concerto, etc (Braithwaite, London PO, Lyrita)
Bruckner - Symphony No.6 (Haitink, Staatskapelle Dresden, Profil)
Dvořák - Symphonic Poems (Järvi, Royal Scottish National Orchestra, Chandos) --- this one surprises even myself
Tchaikovsky - Symphony No.6, Francesca da Rimini (Giulini, Beecham, Philharmonia, Royal PO, EMI)
Glass - Another Look at Harmony Part 4, Music for Voices (Riesman, etc, Orange Mountain)
Schubert - Winterreise (Padmore, Lewis, Harmonia Mundi)
Holmboe - Symphony No.11-13 (Hughes, Aarhus Symphony Orchestra, BIS)
Ten Holt - Canto Ostinato (Brilliant Classics) [box]
Liszt - Piano Works (Bolet, Decca) [box]
Medtner - Piano Quintet, Piano Concerto No.1 (Alexeev, Lazarev, BBC SO, Hyperion)
Palestrina - Missa Ecce ego Joannes, etc (O'Donnell, Westminster Cathedral Choir, Hyperion)
Parry, Stanford - Songs of Farewell, etc (Marlow, Trinity College Cambridge Choir, Conifer)
Wagner - Tannhäuser (Solti, Vienna Philharmonic, Decca)
Skalkottas - Greek Dances (Fidetzis, Urals State Philharmonic Orchestra, Lyra)
Simpson - Symphony No.11, Nielsen Variations (Taylor, City of London Sinfonia, Hyperion)
Sibelius - Collection (Vänskä, Lahti Symphony Orchestra, etc, BIS) [box]
Schumann - Symphonic Étude, Bunte Blätter, Fantasiestücke (Richter, Regis)
Strauss - Der Rosenkavalier (Kleiber, Fassbaender, Jones, DG) [DVD]
@DavidRoss: Cue more Bantock surprise

My memory is useless so I am no doubt forgetting vital things that could replace others on the list.