Waves have got a deal at the moment on the Scheps OmniChannel I think it's about $49, this is ridiculously cheap for what it is.
If you don't know what a channels trip does, it's a bunch of plugins that you can turn on or off, izotope neutron is one for example.
It has preamp, EQ, compressor, de esser, and a gate, maybe there's the EQ from the Scheps 73 in there, which in itself is a stunning piece of programming.
It has MidSide, Duo and Stereo on all of the plugins, which is quite nice. You can also add another plugin to the interface.
Just be aware that the sidechaining doesn't work with all DAW's (mine for example) which isn't a show stopper
Just thought you might like to know, as it's rather good at what it does, it's not as easy to use as Neutron elements for example.
Hope this helps
cpm