A suggestion strongly seconded here at the Towers. Danny and I both use mozilla's Firebird out of choice.
Why take any notice of us? Well we use every available and stable browser for PC and Mac to ensure the site renders properly for all users. The one we lapse into using most will have the fewest drawbacks and the best speed for intensive PPRuNing.
Whichever you go for, and this applies especially to those of you on dialup, don't use Microsoft's I.E. It actually obstructs your enjoyment (?????) of this site due to both its bloated, glacial progress (sic) and, especially, its lack of tabbed browsing. I'm forced to use it to run the site from internet cafes downroute and once you've used a decent browser Explorer will drive you crazy.
Regards
Rob