Newbie 1020 User with ? about PFD and flashing newer firmware topic

I know this is over a year later but just picked up a Rogers unlocked Lumia 1020.
Mainly to use as a phone when travelling or when wanting something with good camera.
Like it so far.
Question I have is I noticed that there are slightly newer software versions out from different carriers still with RM-877.
Is there any value in getting the tools and flashing them over what I have?
I have uninstalled the Rogers bloatware apps and not really heavily branded otherwise as it only shows it is a Rogers device in the about screen.
Advice?

Also are people installing the developers preview?
Benefits?