[Rivest]

I have tried all browsers. On my Hero and Evo I found that xScope is the fastest and less buggy. It has more features than the other browsers and is pretty lite.

[paradox116]

There are Dolphin Browser HD and Mini and also stock browser in my phone. Dolphin HD is awesome and have a lot of strong add ons. however, the UI is a bit little ...ugly..I like the gesture feature anyway.
Mini is simple and fast. I like it very much. Also it has a speed dial function.

[KoukiFC3S]

My favorite alternative browser is Opera Mobile.

It's very fast and it now supports flash. It's also very easy to switch tabs, and it supports open in background.

There is also an opera turbo setting that will compress images. The page will load faster and you will also save bandwidth.

[srkmagnus]

I'm on a lower end device, HeroC, so Opera Mini works wonders for me. I used it on the Evo for a while as well and preferred it over the stock browser.