I have tried most softube EQs, trident A range, focusing EQ, etc, the native instruments EQ, SSL Channel EQ (Duende), MAAG EQ4,
I find some of the passive EQs of softube interesting, main problem is they sound too thin...side to side with the wavearts, SSL Channel has an impressive abaility to create depth and sense of 3 Dimensions, it can transform the sound in good way, but SSL always produce this paper dry sound which is hard to get rid of, I can use it as a soundshaping tool but I need something to make it sound "wet" again after in the chain..
MAAG EQ4 is quite impressive specially for some electronic music,with the AIR filter, it is almost like an exciter, not sure what tricks are used... maybe some kind of compression in that air band... but the problem for me here is it sounds too digital from the analogue emulated EQs which gives me that magic and sparkle in the top end..
I tend to always want to boost the high frequencies in my ambient music since it introduce interesting details and sound information to my ears.
It can also have an "exciter" effect, as I said I am trying to find something to beat the Wavearts Bax EQ mainly cause it is a total cpu hog which makes it impossible to make music..or at least it does limit me.. My hunt continues.. to find more analogue emulated EQs.