I have been using Opera for several months owing to this very annoying Chrome bug:
https://code.google.com/p/chromium/issues/detail?can=2&start=0&num=100&q=&colspec=ID Pri M Iteration ReleaseBlock Cr Status Owner Summary OS Modified&groupby=&sort=&id=321294
I use a Matrox DualHead2Go. The Chrome team have bumped it from issue to issue and now it seems with Opera 21 using Aura the bug has made it was here too. Just FYI really.