There a new version of opera mini (5 Beta) that's pretty good. I prefer Bolt web browser because its much faster. They are both available for download at blackberryappsforfree.com.
Opera Mini's greatest fault is it doesn't allow you to view click video links. Example: msnbc.com. Very frustrating.
Also, if you wish to view a "full image" it prompts you to select 'page information' then takes you to a journey to 2 different download pages before being able to view the full image. (example: Facebook)
That being said, OM is MUCH faster than BB Browser. If only they could combine their respected technologies...