been using midori for few hours today.
It's nice browser, works pretty fast, but it lacks stability. it crashes each 5 minutes. In addition, it couldn't search text on webpages, doesn't automatically open majority of links when I click on them(need to click "Open in new tab"), doesn't have spell check, and... well... doesn't have a lot of useful things.
Also I couldn't get smooth scrolling.
So I think its not quite ready for use now, but it's nice app and I think later versions of it will fairly compete with opera and firefox.