Thanks for the answer. I know many are scared off by the closed bootloader of the teensy (though I feel it's a fair thing to do). The lack of on-chip debugging is another shortcoming the Teensys have.

I've been working on an audio project recently, and the the ease of use and feature set that TeensyAudio has is incredible.

Teensy 4 does currently fill a pretty unique niche in terms of processing power though. There isn't much like it outside of professional eval boards.