For a relatively unknown app it seems very mature and designed by someone who, er, actually browses the internet
Pages load quickly and scrolling is smooth. If you go back and forth in the same tab, pages load instantly. And, it seems to have a true exit button which can be set to clear the cache and the app disappears from the task list completely. I've only used it for a couple of hours but it seems a real winner.
Update: a specific website (run by Google funnily enough) crashed the browser & locked up the Scroll - this was repeatable. Also, I was wrong about it disappearing from the task list after exit.
Update 2: It was a particularly nasty webpage relying completely on javascript (google's adwords control panel) so don't dismiss miren just for that, I haven't found other problem pages yet







