At $79, it's not a trivial purchase, especially if you've already got all its functions in Pro Tools. Wave Editor by Audiofile Engineering is a good example. Save just a smidgeon on those D-A converters and you can afford some nice software stocking‑fillers. Even when I'm a bit short of the readies, my theory is that it's better to splurge on really nice clothes pegs and, if necessary, economise on the expensive things in life to make up for it. I think it was a good buy at £2.99 for 12.
This morning in the supermarket I bought myself a pack of deluxe clothes pegs. Other useful Processor options include Normalise, Dither and Remove DC Offset. Wave Editor's main waveform display, with layer control in a pop‑out tab, and Inspector and Processor windows. Audiofile Engineering's elegant package offers impressive editing features at an affordable price.