Wonderful!
For the price, these are amazing. The trick is to not jam them in your ears.  They take out a lot more of the low end, and leave a lot of the high end.  I practice with my band in a 10'x12' room (4 piece with drums), and not only can I hear myself, but my ears do not ring after practice. The case is strong metal, the plugs are quality plastic, and I could not ask for more.
Rating: 5 stars