Bests: new and older Ádám Fischer (especially his Das Lied and M8), Vänska M2, Blomstedt M9
Busts: Vänskä M1 (I wanted to like it; it's too weird), Roth M1 (interesting concept, engineering is poor and blurs plenty of the detail; perhaps I should give it another listen), Iván Fischer M7 (his cycle ends with a shrug)
Honorable mentions: new issue of 2013 Gielen M6, Gabriel Feltz M2 (good not great, but deserves recognition), Roth M3 (very fine, not the best IMO), Gatti M1 (just a bit too slow for my taste)
Blunder: new issue of Jansons BRSO M1: get it together, BR Klassik!
Not Mahler: Gražinytė-Tyla's Weinberg album, Michael Sanderling's Shostakovich cycle (one of the finest ever, as a set), Dausgaard's Alpensinfonie, Tilson Thomas' Ives album, Honeck's Bruckner 9, Nelsons' Shostakovich 6 & 7, Ádám Fischer's Beethoven cycle