Firefox, the ubiquitous browser for desktops, has been on Android for a while, but well, it was pretty slow. An update that just went live brings it some much needed speed, but there are still some nuts and bolts missing.
When you open a new tab the new Awesome Screen pops up, which is basically a bunch of shortcuts to some of your most frequented sites, a tab from your last session, and a couple of add-ons. It's visually pleasant, but offers fairly limited functionality. Firefox Sync is supposed to sync you up seamlessly with your Firefox browser on your desktop. Bookmarks generally sync just fine, though tabs and browsing history didn't make the jump in my testing.
That's just one of the man problems still present in Firefox for Android. The most glaring one is that it just isn't as intuitive as Chrome or even the stock web browser (in Android 4.0). You have to root around get to what you want. There were also some stability issues; the app crashed on me a couple of times. Sometimes embedded videos will play in-line, and sometimes it'll download and save to your SD card. And unlike in Chrome and the stock browser, there is no button you can hit to view desktop versions of sites. If you get sent to a mobile site, you're stuck there. That's a deal-breaker for many. Also, there's no "Incognito Mode" (a deal-breaker for porn aficionados).
Overall, the new Firefox for Android makes major improvements from the previous version, and it's worth checking out for zippiness alone. It's also appealing if Firefox is your main computer's browser, and if your phone isn't running Android 4.0 (Ice Cream Sandwich) yet, then it's definitely a strong contender. Ultimately, though, Chrome is just easier to navigate, more intuitive, and syncing with the desktop version of Chrome works much better. Looking forward to seeing where Firefox goes from here, though. You should be able to download the new version from the Google Play store now.