Blue line plugs
For a no-nag, fully fuctional shareware package, the Blue Line plugins are hard to beat. I especially like the compressor, parametric EQ, and delay a lot -- but you need to create your own presets to get the best results. I also like the Blue Stereo for processing mono sources, i.e. old recordings. I don't care for the reverb, I would instead recommend Jezar's Freeverb, or even better, the RGC Reverb, which appears to be based on the Freeverb code. Good sounding plugs, that don't tie up the system like some others.