I'm pretty impressed with MB4 so far.
Now I need to see what Tracktion's Waveform has to offer. (and how much that upgrade will be.)
I'm expecting it to be around $49. It should be out this month.
Tracktion has a new groove maker thing that looks interesting, and a new midi window, and has ARA for Melodyne.
I may be tempted to pass on it, and upgrade to 32C. (I expect that upgrade to be around $99. we'll see.)
Mixbus is fun, and for a old guy like myself, it's nice to work with something that looks like an old school board.