I haven't tried the Anaxwaves NR plug-ins, but have heard they work fine, but don't always seem to sound like vintage analog decoding. I am not surprised, it is a difficult thing with lots of variables.
I am starting to try their Nak T-100 audio analyzer app, which emulates the vintage Nakamichi T-100 audio tester, with improvements. I have a real T-100 and it is very handy for analog tape servicing. The Anaxwaves app seems very popular among analog tape fans, although they warn that it is not a substitute for lab grade gear, and is totally dependent on the quality and settings on your audio I/O interface.
I have no affiliation etc. but it was inexpensive, and has been updated (free) several times in the past few months.