be more secure with the latest chrome or firefox browser?
In general...yes,..and no.
They might fix known security flaws but will also (most likely) introduce
However, it is superfluous to talk about browser security as long as users
are willing to use almost-certainly-insecure flash plugins.
rest assured they have the average 5 CVE's per line of code,
you know, that is Adobe coding standards ...
Personally i use the Pale Moon browser + an add-on called "js switch"