N900 overclocked to 900mhz and microb is still the best mobile browser i have tried. I would love to have it on my Galaxy S running hummingbird CPU.
That said it's hard to say much about this as we simply don't know how will the browser perform on N9 or whatever. Microb is not perfect by no means as flash 10.1 is not there and improvements to the UI like going fullscreen can be much improved imo.
FF will be on MeeGo but do we know if Nokia will be using it? Especially on MeeGo-Harmattan?
EDIT:
And then chrome comes and rapes them all?