Use the trial to see if the "pattern-based" workflow suits you before investing.
If you are looking for a permanent license without the "Trial" restrictions, many entry-level MIDI controllers come bundled with or similar "Intro" versions for free. Fruity Loops Latest Version Free
Instead of buying expensive plugins, use the trial's native tools (Vital, FLEX, or Patcher). Use the trial to see if the "pattern-based"