SAWStudio

The SAW family has always been second to none in terms of sound quality, performance, and editing speed. Compared on its core feature set it can't be beat. Ultimately the lack of native plug-in API integration hurts it. You have to use adapters to get standard plugins to work and this is where SAW ultimately lost me over a decade ago. Even today, every time I'm pushing regions around or doing any kind of editing in my current DAW it makes me long for the days of SAW and how fast it was to do everything. If only it ran on OS X and had better plug-in API support.