[bobbyjonesrocks]

As the title says, I want to look for a new IEM that satisfies these requirements:
 

1. Strong bass (I want to feel it, I think it's called sub-bass)
2. Great noise isolation (I go to school and I don't want to hear any noise while studying)
3. $100-$200 (I can go lower or higher if necessary)
4. I would prefer to wear it straight down (Not over the ear)

 
I currently have the Monster Turbine Pro Gold's but I have been having durability problems with them. (For reference: http://www.head-fi.org/forum/thread/534001/monster-turbine-pro-gold-turbine-durability-problems )
 
I have already done a little research and have crossed these off due to lack of superior noise isolation:
 

1. Klipsch S4
2. Hippo VB

 
I am thinking about the Atrio M8's (possibly).
 
Any recommendations or comments? Thanks! I really appreciate it.