OMG, this is a fabulous Mahler 4!!! I listened to most of it on e-classical. I just jumped to the start of the fast section in the third movement and went from there (the heart of the entire symphony). The development of the first movement is excellent. The entire scherzo and the heavenly trio sections are excellent. The climaxes in the slow movement are excellent. My only very, very slight reservation is with Carolyn Sampson. But still, she's plenty good enough.
This M4 makes me hopeful that we'll get a sensational M7 from Vaenska/M.S.O./BIS.