Oleg, do you have samples comparing SD vs Sonosax? I thought about selling my SD442 and SD722 and getting the SX-R4 cuz of size, weight and convenience. Don't know if it's worth it. I only have recordings of miniR82 sound which is quite good with the DPA 4060 and MMA6000. I actually use high end mic when I record so I don't really have any samples of Sonosax with high end mics.