Speed of opening is good too. It just flashes straight up as if it was minimised. I don't think it's one of those rogue programs (like Adobe Photo Downloader) that stay in memory even when they're closed, because it's like that all the time, even after a reboot.
The default opening tab, which shows the nine most used sites, is a good feature but I'm guessing it will soon be copied by other browsers.
There are some bad points though. I can't seem to get Firefox-style middle button scrolling to happen, even though I'm told it's supposed to be available. Ditto for Thinkpad middle button scroll, which is a hardware feature and should usually work on anything.
Also, it (so far) only runs on Windows. Sooner or later they'll make an EMX Unix version which will run on OS/2, and THEN we'll see the chips fly.
All in all, it's worth having - but don't throw Firefox away yet.