since 3 months I am using the Opera mini on my Sony Ericsson W900i and I can recommend it to anybody who likes to check the news, weather, the Gmail account or do a yahoo or Google local on the go. The best of all is that it is free. You really notice that Opera specializes in mobile browsing. I can even use Jajah on the go.
Also see previous article about Jajah
[...] Internet on the go (on your mobile) [...]