I have used Dolphin HD over the years but always found myself going back to Opera Mobile because it ran smoother and worked with more sites for me but recently the browser received a new rebuild that added a number of performance and UI tweaks that makes it worth a second look and so far the browser has stepped up to the the plate and hit a homerun... the latest build loads pages smoothly and works well with every site I through at it so far..
Here is a few new features:
https://play.google.com/store/apps/details?id=mobi.mgeek.TunnyBrowser&
feature=more_from_developer#?t=W251bGwsMSwxLDEwMiwibW9iaS5tZ2Vlay5UdW5ueUJyb3dzZXIiXQ..

- Re-designed Dolphin Sonar and Gesture: New interface, design, and easier access to help menu
- Menu bar: New design that gives easier access to most commands without having to leave the home screen
- Add-on Sidebar: New design that displays both Add-on icons and names
- New context menu and long press menu for more efficient browsing