If you are doing extensive recording and mixing, with great numbers of tracks,
Mixbus wouldn't be the way. If you are staying under 64 tracks
and not looking for "extensive capability", then Mixbus is viable alternative.
If you're doing personal work only, then Reaper, at $60, is steal. For commercial
use it's $225 I think...
There are LOTS of viable DAWS. The REAL question is "how much do I need"?
Sonar is the MOST bang for your buck, IMO. Not only the DAW, but ALL of the other
things that you get with it.
DAW's are highly subjective. You need to do TRIALS, and find out what's right for YOU!