Hi, technically Reaper, just like WinRar, has unlimited free trial (fully working, not crippled version), so this might be a good chance to see if this DAW is suitable for you. Personally it's my favorite DAW (mainly because of different sound design scripts).
I'm a bit late, sorry, but if you are still considering DAWs, you might also consider MuseScore. It currently has version 5 out, which now supports plugins and has improved sounds. I personally use this as it can also produce sheet music quickly :)