You'd think I'd be done buying MHL adapters, but a thread which I now believe had false data - cited that the official Samsung MHL adapter output 60 FPS from the evo 3D. When I noted that all of my adapters output at 30 FPS - and the thread maker did not respond, I decided that it might be worth buying the Samsung Adapter as a test. To be sure - I bought the adapter directly from Amazon (not a vendor) at a premium price of $25.
I will note that to date I've seen no difference in Video Quality. I'll follow up this thread with a post reviewing video and gaming - but for now, all 4 adapters report 30 FPS from a stock EVO 3D, and I can see no difference in video quality. Where they do differ is in charge rate, and compatibility with the HTC dock - because some have bulkier micro USB plugs than the others.
One note - my original EVO 3D gradually lost HDMI output. Though presumably the output was digital, I got snow which varied by jiggling the port - and on some TV's I could get no output or strange colors and lines. I figured the port was shot and got a refurb insurance replacement - that fixed the problem. Since then - I've tried to use the HTC dock wherever possible to prevent further damage to my USB port. The HTC dock works great - with push button HDMI output and costs $15 at Radio Shack. The drawback is that you can use NO cases.
The following charging tests were done with Battery Monitor Widget. Having tested A LOT of battery monitors from the market - this is the only one that consistently works well. To set up this test - I connected each adapter to the dock (where possible) and only left wifi, phone and 4G on. All used the same USB charger (2.1A - though we max out at 1) and since a portion of the charge goes to the adapter, I wanted to see how much actually went to charge the phone. I didn't actively run programs - I stayed on Battery Monitor Widget's screen and monitored charge rates for about a half hour each. I can tell you that charge rates playing videos have been pretty consistent with the results - some MHL adapters drain the phone playing videos, others don't.