QUOTE(holyghost @ Mar 9 2017, 10:48 AM)
after digging some reviews on son HX90V, seems promising.
I did thought about getting a good camera phone eg Huawei P9. but the question 'does phone cameras better than 'a camera in terms of image quality(day n night)?' always pop in my head. Can share your view?
n camera phone usually has bad zoom image

Cameraphone, no matter how good, wont beat the HX90V but of course it's more convenient. As you said, no optical zoom for phones can be limiting especially for your usage.
QUOTE(sniper on the roof @ Mar 9 2017, 11:06 AM)
I'm not talking about DSLR.
- The kit lens with a run of the mill dslr is normally f3.5 at its widest.
- RX100 has 1" sensor and f1.8 lens at the wide end
- A smartphone has roughly (depending on brand) 1/2.5" sensor more or less f2.0 lens
- Both the canon and panasonic you mention has 1/2.3" sensor and f3.3 at best case scenario.. widest.
Such scenario imo..
RX100 > DSLR+kit > good smartphone > 1/2.3" compacts.
sensor size also plays a factor. a f2.0 lens on a phone =/= f2.0 on a mirrorless. also bigger sensors can handle higher ISO, which helps to overcome the smaller f-stop