Just discovered the Dolphin HD browser and did a comparison test on speed of website page openings and video playback. I was actually shocked at how much better the Dolphin is on my EVO 4G compared to the stock browser on video quality. I went to the CNN mobile website and picked the same videos of the chaos in Egypt and played several first using the stock browser, then using Dolphin. I found the videos to be very noticeably, actually amazingly better quality using Dolphin. For me the speed of navigating from one website to another and page loading was comparable, and I seemed to alternately think one was slightly faster than the other and it was very subjective. The surprising thing was that there was no comparison on smoothness, colors, and overall clarity between the two when streaming video. Dolphin was far, far better. I showed it to my wife and she also immediately saw the huge difference between the two. I then went to one of my local TV news sites and did the same comparison tests on the same videos from there using both browsers, with the same results. Dolphin HD was very superior.
Obviously from this test the EVO hardware is capable of rendering very smooth and sharp streaming video playback quality, but it looks as though the stock browser is limiting that quality and Dolphin somehow makes tremendously better use of it. Very impressed with it. Having only been an EVO owner since Christmas, 2010, I didn't realize until now that it's capable of better streaming video quality than what I have been seeing before discovering Dolphin HD.
I had also tried the Miren browser as an alternative to the stock one or to Dolphin HD, but I personally didn't care for the overly simplistic interface of Miren and the lack of add-ons (plug-ins) compared to Dolphin. Fast enough to be sure, but it just looked and felt like a stripped-down version of a full-featured browser.