Conclusion: These are, beyond any shadow of a doubt, the finest headphones I have ever owned (disclaimer, I have never spent more than 100 USD on a pair). The treble is crisp, the bass has punch, the overall experience is like pouring milk and honey into your ears. The only part of this headphone experience that can be fouled by personal preference is the leather head strap, and the overall cord design.
Conclusion: I'm a novice when it comes to high end quality headphones. This is my first pair of good "cans." Truthfully, I just wanted a good pair of headphones to play on my handheld Nintendo 3ds and Playstation VITA. I don't think either of those two systems were good testers of the Grado's sound quality, so I'll just review the comfort and style of the headphones. Look, not bad. They feel sturdy. You can judge yourself from online photos.
Conclusion: I tend to break headphones easily, so I like to buy inexpensive ones. These headphones have an excellent sound for the price. They have the typical drawbacks of on-ear headphones - no sound isolation and not as comfortable as over-ear (although really quite comfortable for the type). In about a month, the left earphone fell off the headset. This was easily fixed, but definitely downgrades the durability in my view.
Conclusion: Very light and very comfortable while delivering a pretty linear response. I use these while playing my Roland TD-20 e-drums and they do a great job of revealing the timbre and detail of the cymbals as well as the punch of the kick drum.
Excerpt: Bought a pair for my girlfriend for her birthday, listened to them a few times, and went out and got my own similar pair (I bought the Grado Alessandro MS-1i, which are a similar but tweaked pair of cans based on these). They have amazing sound, and sound better than many pairs of cans costing 2-3x as much. Really, Grados are some of the best, and the SR-60i are some of the best values in headphones out there!
Pros: Compact, Durable, Good Value, Great Sound, Lightweight, Stylish