Yesterday, I bought 5 used CDs: Stravinsky & Bach violin/piano, L. Kavakos/P. Nagy (ecm); Brahms cello sonatas, Wispelwey/Lazic (channel); Janacek, Tara Bulba, Suite from The House of the Dead, Arming, Janacek Phil. Orch. (arte nova); Schubert, String Quintet, Rostropovich/Melos Quartet (dg); and The Clash, Sandinista! (sony).
Two recent Mahler CDs are in rotation in my system, and I recommend both.
First, Jansons/RCO Mahler 1 (rco).
This is an exciting live version (actually, a recording made from more than one performance) in outstanding sound. It has rapidly risen to become one of my favorite M1's, together with Kubelik and Tennstedt. I have some quibbles, particularly re: the final movement, but Janson's energy, the RCO's superb playing, and the recording's terrific modern sound sweep them away.
Second, Schubert's Der Tod und das Madchen Quartet (arr. for string orchestra by G. Mahler) and Mahler's Adagietto from M5, R. Kofman, Kiev Chamber Orchestra (mdg). This is another sonically excellent recording. I have never listened carefully to the original version of this Schubert piece. With that said, this is a dramatic and compelling recording, with a deeply resonant and rich acoustic space. I take the CD off after the Schubert; the stand-alone M5 Adagietto doesn't work for me. Even so, this is one of my personal favorite CD acquisitions of 2007.