I'm on Atomic right now too and always seems pretty stable, but can depend on the sites a person often visits. Like Digg can fail I heard due to the ad blocker when on, but a fix is already submitted.
I really like the tabs and how they function. While one tab is loading I can jump to another, even on the iPhone without noticing a hit. It's said if music is playing in one tab, you still here it while in another. When you exit the app, you can set it keep the tabs last open, but they will all reload at the same time.
Features a like: Lock rotation, search with quick selection to other Places like bing, amazon, YouTube, even current page. Access code for privacy, so anyone that wants to see your great new iPad doesn't have to know your browsing history. Private mode if needed. Fullscreen mode, which the new version allows three finger tap into, not just out. New version hopefully improves holding a link, which reduced the time to half a second to access open in new tab, or background tab.
The free trial, last I checked was outdated, even for the iPhone version.
Despite little bugs, it's been so much more productive than safari, and for a dollar, you get a universal app that works great on the iPhone.
Just note, if you have the wifi ipad problem, when exiting the app to fix that, copy any message you might be writing since the page will reload. I have to do that now, the wifi is gone again.