Some of you guys classify "best browser" in an odd way. I don't classify what's the best browser based on just stability or how fast it is, I need to USE it. Safari is made by Apple to use on Apple's operating system. That means all the gestures work perfectly, symmetry with the system, UI is inline with OS X and feature set is spot on and I like the animation such as the rubberband effect, it's inline with how my iPhone works. To step off my iPhone using Safari and jump on my Mac using Safari I don't feel like I'm totally switching systems especially when using the iCloud tabs. 3rd party browsers..."work" but they seem very much out of place on the Mac.
For example, there are times I need to use Firefox because when paying my Comcast bill online it doesn't seem to complete the transaction with Safari. Works perfectly in FF, but FF looks awful. It's always good to have a backup browser for certain needs but Safari is what was "made" for the Mac.