Yeah I have tried Opera Mini, but I like the stock Metro browser for most things. It has a feature where you pinch to zoom and it resizes the text into a column in that area so it fits on your screen. Very handy feature. I couldn't seem to get Opera Mini to do that, in Opera Mini it seemed to me that you touched the screen and it would zoom to that area. But then not wrap the text to fit onto your screen like the stock browser does. Unless I am missing something?
Also, I heard that the Metro browser was based on Opera Mini? Or is it that the stock Android browser is based on Opera Mini, and just renamed "Metroweb?"
Haven't tried Dolphin or FireFox yet, but I will when I get my phone "back" in a few days.