Should I buy Synfire?

Welcome Roberto!

Loops and transpositions with a DAW are fine, but only get you so far. Possible combinations are very limited. Editing or replacing parts of a loop requires you to match all notes with the given harmony manually. This can be very cumbersome for anything more complex than a simple bass line. And then, the part you just created can only be transposed chromatically as a whole. Features like "chord tracks" have fundamental limitations.

With Synfire, you can mix and match almost any source material and edit/replace harmony completely - even using a different speed and rhythm of chord changes - at any time. You can still do that with an already finished song. Moving parts around freely and seeing them adapt to the harmonic context is a great source of inspiration. A DAW can't do that.

(http://users.cognitone.com/tutorial/figure-editing)

(http://users.cognitone.com/tutorial/drawing-melodies-follower-voice)

An arrangement is much like a recipe. Synfire cooks a new meal for you, each time you change ingredients or procedures. With a DAW, you merely get a kitchen. You'll have to cook the meal yourself ;-)

Feel free to ask more questions. We're only beginning to scratch the surface ...

Welcome to the Synfire community, Roberto. Yes, Synfire has a learning curve, but it's worth the effort. We are striving to make it more accessible, but have to be careful not to sacrifice its power. Feel free to ask for help at any time.