I personally like the fire one more, but the text looks like it's over everything, maybe put it behind the fire layer and affect them both by the video distort effect too. One thing I liked about these are the songs you put in, they're pretty nice.

there's nothing to cnc, you didn't make them.

Try and keep them around 10 seconds, 20 seconds is too long for an intro

Whops, didn't fully read that, sorry

Look at Oracle1 intro, it's really cool. For intro you firstly need to make logo. Or if you won't make logo it must match with your video.

The font of the text should be more appealing, more themed to the intro.