Okay so I want some really nice professional headphones. I have done some research but I have no idea what some of the terms mean. Like what is the difference between mixing, tracking, and monitoring headphones? Also should I get studio headphones or audiophile headphones? I intend to use them for the soul purpose of listening to music and watching movies. I want something that will be very immersive. I want to be able to hear all the highs and lows of the music. What I'm mainly looking for is something with a strong bass for music like dubstep, but I also want to hear crystal clear acoustics for songs with a higher decible range. I want to try to not go any higher than $450. If you can answer all my questions and help me out that would be great!

1) PLEASE can someone explain the difference between mixing, monitoring, and tracking headphones?

2) What's the difference between audiophile headphones and studio headphones? and which is better for what I want to use them for?

3) And any suggestions of models or different brands based off of my specifications?

Thanks!