The poor English let I can't join the discuss more.
In the NOS units, there are no any digital filter built in, all modes are real non- oversampling.
Maybe in future we can try the digital filter built in but still without oversampling.
The nos modes had different arithmetic to process the data, a Chinese sentence say " all the routes can arrive Rome " , different routes may had different views for the eyes.
In audio world is for the ears.
The most important for all...