That being the case, what is the best browser to replace Firefox?
The only reason I load firefox these days is for their debugging plugins. Otherwise, I'm nearly 100% Chrome and Opera.
For a general browser replacement, Chrome is really great. Might take a bit of getting used to because it is almost too simple with the interface, but you'll pick it up quickly.
The biggest deficiency in Chrome is that is hasn't supported plugins. If you use a ton of plugins in your firefox, you will probably miss them in Chrome. But plugins are coming. They are in the dev branch and will soon make their way to the beta release.