Genelec 8260A with GLM or Trinnov Nova

I paid dearly for these monitors some years ago and I've been really happy with the 8260A when working in the bigger, treated room with only the GLM correction.

But now that I moved into a smaller room, even post-treatment I've got nasty dips in the 50Hz-60Hz region (probably not easily fixable) but also some phasing issues between L and R monitor that need attending.

Would you recommend getting the Trinnov Nova instead the GLM for this situation?