I own Spectralive V2 and 4Front Mastering Bundle. I was first very excited about Spectralive, but after a while i realised Spectralive changes the stereo width (for e.g. everything has suddenly stereo, even if the Stereo fader is set to 0 and source was mono). Using Spectralive on every track is a bad idea, it makes mixing alot harder and everything sounds to start muddy. 4Front Countour Max gives you much more cleaner control.
But in generell, i prefer these days using VoxengoSpan and boost or limit frequencies to 'excite the sound' using a simple eq and my ears, simply unbeatable (for me)
