Quite a few of these vintage vs. new threads around lately. Folks talking about amplifiers, speakers, cables, and now even vintage vs. new turntables.
If the rest of the threads are any consensus, there will be no consensus. Some favor vintage, while others favor new. Generally the common feel seems to be that vintage is different sounding than newer gear. Different may, or may not be perceived as "better" in the ear of the beholder.
If you are happy with the way your system sounds, maybe buy another Nagaoka as Schubert suggests, and spend the rest of the money on some new or vintage vinyl.
If the rest of the threads are any consensus, there will be no consensus. Some favor vintage, while others favor new. Generally the common feel seems to be that vintage is different sounding than newer gear. Different may, or may not be perceived as "better" in the ear of the beholder.
If you are happy with the way your system sounds, maybe buy another Nagaoka as Schubert suggests, and spend the rest of the money on some new or vintage vinyl.