I've been use Xscope browser a few days because it's fast, small, and has nice bookmark links... but I just tried Opera Mini (hadn't tried it a long time), and I must say, it's also fast and has a lot of really nice features. It's UI is very nice, graphics seem clearer, web page handling is nice (option for "single column" is nice), nine custom speed dial links on home page, does not build up cache at all, and you can add search engines to the search bar! Also after a few days, with 100 bookmarks added, the app is still only 880mb... and cache never build up.
Only I don't like or haven't found the answer for is how to import bookmarks (from default browser). Not a big deal since I use Tree Bookmarks I mentioned previously.