I still have the 2015 version on one of my computers ...
That makes me a former Samplitude Music Studio version user ...
Now I mostly use the full version of Samplitude Pro X 2 ...in it's place...
Even though I have X3 and Splat , I have used both Samplitude Pro X 2 and Samplitude Music Studio 2015 to create musical sections that have wound up in just about all my music .Many of these sections I have brought back into a parent project / mixing environment ..
Samplitude Music Studio has some very nice instruments included . I find them to be very usable and somewhat unique sounding ...The plugins are fantastic ..many of the plugs you get is what comes in Samplitude Pro X 2 ...
The ability to customize the metering leaves most other DAW's in the dust ...including a few well know favorites ...
Midi editing is very precise , Staff view is rather decent ..
Over all what I like the most is working in an object oriented musical environment ...nobody does that better than Samp ...
FWIW SONAR has been catching up a little , but doing precise object audio editing in SONAR is rather cumbersome
In any version of Samplitude is is very easy to do ...
For the past 11 years I have used various versions of Samplitude as my main audio editor . ...
IMHO , If you have SONAR and you pick up Samplitude Music Studio 2016 . Or when money permits Samplitude Pro X 2 , you may find that you will now have a very powerful synergistic platform to create music in ....
Both SONAR and Samplitude make a real nice pair because they both have very strong points in their functionality and I feel that they can complement each other rather well . IMHO the Same goes for the weaknesses ...
the individual areas where they may be weaker in ..the other DAW of the 2 picks up the slack
Kenny