I see that these plugins are being hosted on Acoustica's site. Their Mixcraft DAW software looks like a nice blend between my first DAW, PowerTracksProAudio, and my current, but unsupported DAW, Tracktion.

Looks like Mixcraft has the midi note duration editing feature found in PTPA where there is a hybrid notation/piano-roll display of notes where you can change duration simply by pulling the horizontal bar associated with the note. Why other notation editors don't follow this kind of example is beyond me - it's a very intuitive way to mix the notation/piano roll paradigms.

-Scott