I got your point. You will be surprised how your internet experience will change with Opera - to better!
>>I hate it when a popup not only pops up, but also resizes my main browser window.
This doesn't happens in Opera anymore. Actually, for a long time already.
But, what you said about graphics package you use, is applicable to Opera the same way. After all, it's a matter of personal preference and things you're getting fimiliar with. All I wanted to say is what users are missing if they don't know about the alternative available, though not free.
Keyboard shortcuts+navigation, simultaneous back/forth moves through the document history, page display modes, MDI interface, mouse gestures, url autofill, general browser behaviour tuning, etc, etc... All these things taken separately are not something outstanding or completely new. But all together they bring absolutely different implession. Your thoughts will be how could you live without it before.
I got your point.
You will be surprised how your internet experience will change with Opera - to better!