I listened to both of the RND plug-Ins today by playing back a song on Cubase 5 (on XP machine) with 20 tracks or so, VST instruments etc. The music style was rock - ele & aco guitars, drums, keys etc.
I tried the EQ on the main output buss and it sounded very smooth and musical yet surgical if desired. On a Martin 12 string guitar I heard similiar positive traits. The interface displays a nice large frequency spectrum.
I listened to the compressor at the same time and on the main output it sounded smooth and balanced. The two feedback modes vary the sound from very smooth and rounded (relaxed) vs. tighter and maybe punchier but still very smooth overall. I also tried it on the electric bass (a Precision bass thru an amplifier) in the song. Both feedback modes could give a very powerful and balanced overall sound but one is rounded and the other tighter.
I am not exactly clear yet on the CPU usage of each. With project running, the Microsoft Task Manager indicated the CPU usage was in the low 60 % range and after inserting both RND stereo plug-ins into the main output buss the CPU increased to the low 70 % range.