On my PC, I use Firefox. As a computer science major, I don't see any specific advantages to Chrome, except for the "Ooh, pretty" aspect of it, which is something I couldn't care less about. Your IT fella is wrong, or infusing his personal opinion into his advice - Chrome is no more fast or secure than Firefox.
On my netbook (Read: Tiny laptop), I use Opera. Opera lets me do more using keyboard commands than either Firefox or Chrome, so I don't have to futz around with the trackpad. Speed dial is awesome. You set up a list of 9 sites, and ctrl+1 through ctrl+9 take you there instantly. No other browser does that.
EDIT: Decided to test it again, as I haven't in a while. You can try the test for yourself at: http://acid3.acidtests.org
. Higher scores are, obviously, better.
The latest release of Chrome is, indeed, slightly faster than Firefox. Opera used to require addons to pass, but I suppose the latest release is an improvement. Will be using Opera across the board from now on. I stick to what I said about Chrome security vs. Firefox. Google, in a remarkable display of douchebaggery, tested the unreleased
Chrome against an old version of Firefox. You don't need to be Miss Cleo to know that Chrome was gonna win that one.
IE, just for the lulz: