Second this - you are absolutely right imo. The NP has the best balance / sounds best (to my ears that is) with the bass switch off.Bass switch on affects the mids. The NP has enough bass with the switch off. Definitely has more bass than Mest MK2, for example.
The NP mids are good if you use the bass switch on, and great if you let the bass switch off.
One nice thing about the NP is that it can be tuned to ones likings with different cables and tips quite easily as it scales well...