I disagree that the Q lenses are better than the MX-1 lens.. They are good, but not better. And frankly I shoot RAW, so OOC without pp is irrelevant to me. The camera colelcts the raw materials which I use to finish the image.
I actually don't need high ISO with the Q, it's not that sort of camera for me although ISO 800 is still good. And here, in rural Australia, there is no chance to get my hands on anything with a PENTAX logo unless I buy it online
Bottom line [for me] is that the original Q produces excellent results and succeeds at being a fun yet serious micro mirrorless interchangeable lens camera