I was not impressed.

The Turbines are so-so IEMs with muddy sound that left me fairly disappointed.

BUILD: 

The build on the Turbines is stellar. I purchased these before I began taking-care of my belongings, and they survived even the heaviest abuse. They've been crammed in pockets, run through the washing machine, and dropped countless times, and they still look brand new. The metal buds are extremely durable, fairly heavy, and just feel expensive. They're also very beautiful, and fun to touch. 

SOUND: 

This is where the Turbine falls short. The sound is not bad, but it is beat by many cheaper IEMs. The bass is very heavy, and is almost always out-of-control. The mids are the best part of the Turbine's sound, but they are often destroyed by the overpowering bass. The highs are very disappointing, to say the least. Crash cymbals, screams, and synthesizers sound as if they're being muffled by a pillow. Even though the sound quality is nothing remarkable, the noise isolation is phenomenal. Even the noisiest buses are made nearly silent by the incredible Monster Super Tips. I often stick these in my ears while I'm drumming, because they isolate noise better than ear-plugs do. 

FINAL THOUGHTS: 

The Monster Turbines look and feel expensive, but they do not sound the same way. To the average listener who is often in noisy places, the Turbine is a fairly decent pair of IEMs. Unfortunately, with so many other IEM options (most of which are much cheaper), I cannot recommend these to anyone.