Since the subject has turned to RAW processors ...
DxO Optics Pro is also a good RAW processor to consider for Mac/PC.
In many ways DxO is easier to use than Lightroom, since it lets you work without a catalogue, for example. The interface is simpler than Capture One too.
We are presently spoiled for choice, in truth, in terms of good RAW processors for Pentax. Do not let the hardly usable RAW processor that Pentax supplies with the camera lead you to believe that processing RAW images is something to be avoided at all costs.