Opera 8.0 is really only another preview version of 7.6. I dunno why Opera decided to call it 8.0 ?
Nevertheless I still consider Opera a superior product to FF despite its horrendous cost of £25. I just can't get my head round a download of 4.7 MB for a basic browser with no enhancements compared to Opera's 3.4MB with all features fully functional. Add to that the requirement to download further 'extensions' to make it work as Opera does as standard, plus the built in mail client.
I could never get FF extensions to work and was unsure about downloading stuff written by FF enthusiasts rather than Mozilla employees. Who checks for bugs and compatibility with other 'extensions' ?
Ah well, seems you can fool most of the people most of the time !!
This is a screen grab of my Opera UI - pretty and plenty of real estate ! Most functions are mouse gestures or appear only when required.