Opera.

Tellos Athenaios already gave a good list, but there are some more features he didn't mention(maybe he doesn't like them as much?).

- Opera link, synchronizes your bookmarks etc. between all your Opera browsers (does seem to go wrong a bit now and then though, will have to re-sort my bookmarks, but it's really nice when it works)
- Opera unite, allows you to host content on your PC for your friends etc. rather new, not sure how secure it is
- works on more or less every device, I got it in Windows, in Linux, had it on my old windows mobile-based smartphone and would love for Apple to approve it for the iPhone, not that I got my hopes up though...

Concerning adblock...
http://arstechnica.com/business/news...s-you-love.ars