Noiz2
Sound Ninja
Why did you give it up? I still use Sawstudio and I think its about the best and most reliable software out there to mix midi, serious multitrack recording and video all at the same time and with great accuracy.
I started of in theatre and very low budget films, when I started to get work, how do I put this so I dont sound "condesending??, a that paid it was all Protools shows. At that time PT only ran on the Mac so I ended up switching systems also. I tried having both around for awhile but it was just too big a pain. Also at that time SAW didn't do feet and frames, and that is sort of a requirement. But I liked the app a lot. At that time it was much more stable than PT and did 90% of what PT did ( and a bunch more in some ways) at a fraction of the cost. But I work in the industry and sort of have to go where the work is.