With Chrome you have to trade memory usage for the process sandboxing of each tab which adds a measurable overhead. But I think for the general population it is a trade worth making.
I think it definitely used to be, but these days Firefox crashes so rarely that I don't see it as an issue. I imagine other browsers are similarly stable, and it depends on your personal usage patterns, but I think the majority of users probably neither use dozens of tabs nor experience frequent crashes, so both should be fine for most users, but power users are likely to prefer one or the other.
