I believe Opera was born on the Amiga, just never released for it.
Opera began as an AWSOME web browser, then began to really suck around version 3 or 4, then at version 6 it began to get REAL good again!
I'd die to see an Opera port to Amiga OS, I don't care if it is commercial I'd DEFINATLY support it, and use Mozilla as my back up brownser "just in case" there is a page or two that Opera does not like.