Presently, these reduced prices present some interesting purchasing options.
For example, in my circumstances, in a single Sooloos zone, the price of an MS200 + AC12 equals that of an MS600 - but I guess that the latter technically offers the better choice.
Likewise, I would imagine that an MS200 + AC12 + QNAP TS-251+ offers a more sensible purchasing decision compared to buying an MC200 for similar money (assuming you already have some HDD's).
While initially tempting, I believe it's wise to wait on MQA enabled devices to emerge.