[km3k]

It might be a placebo effect, but I find that I switch back and forth between Chrome and Firefox every 6-12 months after the one I'm using feels slow and the other feels faster. Maybe they're actually leapfrogging each other in performance, maybe not. I'm currently on my Chrome phase.

[brian-armstrong]

One thing that I think could be an interesting variable is how many tabs you've accreted. Browser A with 100 tabs open versus Browser B with 1 tab.

[km3k]

I don't go crazy with tabs and I like to clean up my tab bar by closing old tabs. It's rare that I have more than 20 at a time open.