I use Firefox a lot on my laptop and desktop. And did not use Opera browser until I get my hand on HTC HD2 which have Opera Mobile 9.7 built-in. Too bad that it does not have Adobe Flash Lite and I am stuck with Microsoft Internet Explorer Mobile 6 for flash websites. However, the wait is over when Opera Software comes out Opera Mobile 10 for Windows Mobile and Symbian S60 while Opera Mini 5 for Android, BlackBerry and also Windows Mobile (yes for Apple iPhone 3GS if Apple approves their AppStore submission). I managed to play around with Opera Mobile 10 and I like it.