My personal experience/feeling is that MicroB on OS2008 is better overall than Opera was on OS2007. I rarely see MicroB crashing on OS2008 (certainly less than Opera did for me on OS2007). Also, during OS2007 days there was too much times that I had to use MicroB beta since Opera just didn't work at all (Like CVS web site you can't browse at all. Once I was browsing newegg's web site and Opera always crashed... while MicroB just handled it fine.) While MicroB still has many bugs, I haven't found those too serious to ruin my web experience...

I agree that Opera is certainly better optimized for portable devices than Microb, at least for now. But since MicroB does support more websites and features, and does work reasonably well on OS2008, I do see a point on developing it further and dropping Opera. (We do not want developers limited resources to work on TWO projects... what would cause both projects become crap...)

Again, just my 2 cents... YMMV.