[Brightcolours]

Not sure about the SX280 (new generation), but the old SX230 (240) and SX260 are apparently nicer than their Panasonic/sony counterparts in IQ, and they have one big advantage: CHDK firmware. 

 

Just put it on the SD card, and you will have:

RAW files, bracketing, full manual control over exposure, zebra mode, live histogram, grids, 

 

• <b>Motion detection</b> - Trigger exposure in response to motion, fast enough to catch lightning.
  
• <b><a class="" href="http://chdk.wikia.com/wiki/USB_Remote_Cable" title="USB Remote Cable">USB remote</a></b> - Simple DIY remote allows you to control your camera remotely.
  
• <b>Scripting</b> - Control CHDK and camera features using ubasic and Lua scripts. Enables time lapse, motion detection, advanced bracketing, and much more.
  

<p style="font-style:inherit;font-weight:inherit;margin-left:0px;">I think that CHDK firmware makes these cameras more attractive than any other small differences, and it makes the Sx230/240 worthwhile.

http://chdk.wikia.com/wiki/SX230

http://chdk.wikia.com/wiki/SX240

http://chdk.wikia.com/wiki/SX260