I have been trying out Opera over the past week or so (9.24). It is a nice browser - seems fast, shows page sizes, statistics, progress etc. But I would prefer firefox over it because of the following reasons -1. Non-intrusive search.I don't like modal or even non-modal boxes popping up in the centre of the screen. Firefox is brilliant in this regard.2. Spell checkOpera requires you to download GNU Aspell. Fine, I do that. But it does not check for errors automatically. And a separate window pops up, again.3. Cleaning upOnce I set up privacy settings in Firefox, it cleans up everything in a single click. Opera pops up another box.I don't think I have missed any settings that fix any of the above problems. If something else needs to be done, I would be happy to hear about it.