Youtuber GreatScott! posted a Teensy review video, as one of the "Arduino alternatives" series. Overall, not a bad video; I'd just hoped he'd notice Paul has contributed a lot to the Arduino environment -- not just some very useful libraries, but bug fixes also.

I'm not posting this to fawn over PJRC.com, though. It's just that that is the kind of support I like for my development tools. I'd like to others to know about it, too, so they can make better informed choices.