The text is blurred on the last 3 vids, so I would have to say the first one is the best for an introduction. The "mocucha" text in the first vid is much more defined and easy to read than the others. The background color and effects also don't interfere with text and its clarity.
You should try to not blur the text in the last 3 so I can really see which one is best. Blurry text is not the best because people won't remember your name if they can't read it easy. ;)
Glad to see you're getting back into editing and good luck, Mocu.
P.S. - I'm still a ghost, just a long time no see visit.