Opera has finally unleashed the release version of Opera Mobile 10 and Opera Mini 5 on Symbian, Windows Mobile and that not-really open source whatshisname. Opera Mini 5 is a Java application where websites will be 'cleaned up' and images compressed on the server side before being sent to the client (thus saving the user precious mobile bandwidth), where as the native Mobile 10 will crunch the data on the phone itself.
Speed is noticeably quicker on the new versions compared to the old Beta 2, in both rendering and UI navigation itself. The biggest issue I have is the lack of ability to delete Google as the default search engine. For all the wolf cries Opera has been making to the EC in forcing Microsoft to install a browser ballot on their desktop OS, I find that Opera are a bit hypocritical for not allowing me to easily switch the search engine.
Minor issue aside with the search engine, Opera Mini 5 and Mobile 10 are great alternative browsers for your smartphone. Go download now.