I have used a chain of the included Cakewalk prochannel plugs until I picked up the Nomad Factory Analog Rack on special a few weeks ago. The chain in that rack right now is the preamp, gate, pultec eq, enhancer, channel compressor. The Pultec is just incredible for that round, smooth vocal that I couldn't achieve with the SSL eq.
I also have the Pulgtec freebie that replaces the Cakewalk prochannel eq. I drag it from the fx browser to the prochannel strip, not the fx bin!! This way it gets wrapped as an fx chainer and I can use the other prochannel plugs in the strip however I choose.