Roland PMA-5 or Yamaha QY70? Which is better?

This question basically turns into an (un)Holy War.

They are basically 2 different animals.

The PMA-5 is a Music Assistant which helps you create music - think through difficult patterns, and captur your ideas.

The QY-70 does the same thing, but is also a synthesizer.

Choose whichever has the easiest interface for you to understand.