I'd go for video if I just want to evaluate the technology. But for deep dives, text-based is still more effective.

If the topic is a physical one, e.g., how to change an automobile's windshield wiper blades, I prefer a video, possibly supplemented by textual content. For most other things, text is enough and preferred, if clearly written with well-chosen examples.

I was doing a lot of the video based tutorials on premium site and I must admit I prefer just getting a aload of books, then at least I can go back when I want to re-reference things. Videos I find, its stop starting constantly.

Very much text based. Most of the time I'm in an area where video just won't cut it - no signal, or need for quiet for example. If I know I'm not going to have signal, I can load an article up and it's there (most of the time; sometimes Chrome will be an idiot and try to reload it for me). I don't have to worry about whether or not there's subtitles or decent CC.

I can sit and re-read and re-re-read something until it sinks in much easier than rewinding a video. And I have yet to figure out how to copy/paste code snippets from a video.

This is actually something that's been annoying me - at least one site I frequent that curates programming tips has become increasingly video based. And more often I'm coming across videos for tutorials and "articles" on stuff I'd like to learn, instead of something I can sit down and read.