I think buying Sony PXW-Z 150 has many advantages, and the most important thing is that the definition is better than Sony NX5R. You said that out-of-focus is only a phenomenon in low illumination, and then you just need to set the focal length manually. When the light is bad, the camera is easy to run out of focus in the automatic state. As long as it is used properly, this is not a problem. In addition, Sony PXW-Z 150 is a thin and light machine with good handheld stability.
Sony PXW-Z 150 parameters
Sony HXR-NX5R parameters
If I buy it, it's only about 20 thousand, and I'm sure it's only Sony PXW-Z 150.
Sony HXR-NX5R is actually an upgraded version of Sony HXR-NX3. The advantage is that it has its own camera lamp, which is convenient for emergency use when the light is bad. Sony PXW-Z 150 needs its own camera light, which is relatively less convenient than Sony HXR-NX5R.