Room Correction Hardware options ?

Hi guys

Tried the conventional bass traps, diffusers, etc and none seems to work or remove effectively room nodes in my listening room. Now exploring the possibility of Digital room correction. My options are: Lyngdorf RP1, Tact 2.2 xp and the Accuphase DG48.

Which of these three is the most effective w/o deteriorating the signals ?

Care to share on experiences on these gadgets ?

Regards

Noli