I'm trying Google Chrome right now for the first time. It is pretty quick - probably because it hasn't been loaded up with excessive cookies by all the websites I visit.....
I'm not sure what is up with FireFox - I have been using it for a long time and the latest version seems to run really slowly (mine also uses about 100MB Denis, Chrome is 31MB) and a couple of things aren't working as they should or did.......it's a shame because FF has been so good for so long.
Chrome seems to have the occasional issue with going back a page (using the back button) and I can't import my favourites directly from FF (and it thinks favourites is spelled incorrectly despite downloading the UK English version).....I will give it a spin and see what happens.
Andrew
P.S. Some things aren't intuitive - for instance, I have worked out how to add a bookmark/favourite, and I get a favourites bar when I open a new tab, but as soon as I navigate to a webpage, the toolbar disappears - must be an option somewhere, but that is a strange default behaviour.....