Do you know of a cross-platform browser that approaches Firefox in capability, including (for example) both Flash and some sort of selective Flash-blocking add-on? I rely on being able to enable and use Flash only when I want it. And then there's GreaseMonkey which is an integral part of my Freeping experience...
As I mentioned above, Midori is cross-platform, but I do not know about its capabilities.
I’ve found safari is good in the first two, though I haven’t used linux so can’t speak to that.