Opera is good browser. But you need to study how to use it. Now i am using it. I like the features like

1. Tabbed browsing

2. Caching - that is going back to last visited page won't need page read load, this help in case of form submission, etc...

3. Open web pages opened in last session. I can close my opera at any time. Next time it ask me to continue from last session, so i can continue the browsing from where i left.

4. No Auto spyware and other security risk like MS Internet explorer.