I’ve never been able to perceive the difference between 48 and 96kHz; speakers, listening environment and aged hearing come in to play…
Not sure project studios benefit from recording @ 96kHz. Once it is pushed through a club sound system or streamed online…
24-bit/48kHz definitely improves headroom and makes the best use of HDD/SDD storage:
16 bit/44.1 kHz – 1 minute of stereo: 10 MB
24-bit/44.1 kHz – 1 minute of stereo: 15 MB
24-bit/48 kHz – 1 minute of stereo: 16.4 MB <- sweet spot!
24-bit/96 kHz – 1 minute of stereo: 32.8 MB
This is probably the most concise summing up on the subject: