In these last days I”ve finally upgraded to Opera 9.51. I”ve always been a Opera user, though when I was actively developing for the web, I”ve generally ended up using Firefox and IE only. Now, the good news is that the latest version of Opera already has a JS debugger, which means that now I have the minimum tools for using it while building ASPX pages!
Btw, one note: make sure you remove previous installed versions before installing the new one. I didn”t do that and ended up not getting dragonfly properly configured (or at least, the menu item wasn”t property configured to load dragonfly).