In my opinion, Audition still is the best audio editor on the planet - at least for single-file editing (i.e. Edit view in Audition) - especially when it comes to accurate waveform/spectrogram display and filtering.
Sorry for bumping this old thread, but it seems that since today, Adobe is offering the "old" Audition 3.0 for free as part of the CS2 download:[removed]
Reading the comments from what I believe is a Adobe representative, this isn't really what is supposed to be going on; only licensed folk are meant to be using it:http://forums.adobe.com/message/49746621:49pm entry today:"You are only legally entitled to download and install with that serial number if you have a valid license to the product! ..."