well, I don't know about every type of micro motor but probably the most popular are the Peak Chubby and Team Orion Baja, which are both considered "modified" motors. I'm not really knowledgable about electrics but I believe the differerence between a "stock" motor and a "modified" motor are the amounts of winds or "turns" in the wrap. You could probably find better information in the electrics forum. Then... as far as brushless is concerned, well that's a whole nother ballgame. I don't know exactly how they work but when the're paired up with a good battery pack they make a 1/18 scale vehicle fly... waaaay quicker and faster than any brushed motor could attain. Obviously.. you'll pay for what you get. I used to run a brushless in my mini-T but decided to go back to a Baja brushed motor. I was tired of fixin my mini-t all the time due to high speed wrecks. I have just as much fun with them when powered down with a decent modified motor.