Renoise is pretty simple, good for making complex line by line edits. Id say perfect for psytrance or simerlar. Theres a good demo and its relatively cheap to get the full version.
Reason is also good, but it is all 'in the box' so to speak. Reason doesn't allow you to use external instruments or VST plugins (vst is the standard plugin format). Although it does allow 'rewire' whch connects it to specific programs, such as... most of the top DAW's
Ableton Live is functional, easy to use and adaptable to almost any set up/input/output config. You can DJ with it, produce music with it, make mixes and route and record live jams. Tho its certainly not free, there is a trial version.
FL studio, Cubase, and Logic i cannot comment on. Tho im sure almost every DAW (digital Audio Workstation) can do 90% of the things very other DAW can. They all have strength and weaknesses.
Im afraid i dont know many free programs. I hope this helps.
βRight here and now, one quanta away, there is raging a universe of active intelligence that is transhuman, hyperdimensional, and extremely alien... What is driving religious feeling today is a wish for contact with this other universe.β
β Terence McKenna