And the reason why I am toying with Opera? Well we are going to be doing some heavy re-work of of one website at work and it will be all done in HTML (using JQuery for coolness). So yes that means I need to test the site as I go along in the most popular browsers: IE, Firefox and Chrome. So then I thought why not Opera as well. Heck I should also try Safari I guess. The worse is IE, cause so many still use version 6.0 (27% of internet users as of 2009). What a pain!
Oh wait, with Flex you just have test once :)