Ok, so I just got them a few minutes ago (nearly a week early), and I'm in the middle of listening to my second song with them. Again, I'm not as experienced with reviewing as most people here (this is my first review here), but here goes.
I'm going to give them a few days to burn in, but right out of the box the bass is decent, but it's certainly muddy. Mids and highs are mostly clear, but can be overpowered at times by the muddiness of the bass. I'm listening to a few hip hop tracks right now, and so far it's not that big of a deal, but I hope this will clear up over time. The bass gets a little clearer when worn over the ear, but this also makes the mids sound a bit hollow.
Overall, these headphones seem very durable, which was the main draw for me, but the flat cables aren't quite as thick as I expected them to be. The cable is reinforced with thick plastic where they connect to the earpieces, the y-intersection, and the jack. The jack is gold plated and straight-angled, but there is plenty of reinforcement there, so I don't think that I am too worried about problems there. They come with seven pairs of tips, double flanged extra large, medium, and small, and single flanged large, medium, small, and extra small. When I say small, I mean seriously tiny. The smallest size are so tiny that I can't imagine anyone who could fit them in their ears without them falling out, and the extra larges are enormous. They also come with a shirt clip, but so far I haven't experienced any microphonics, so I don't think that I will be using it. The case is made of plastic and is just small enough to fit in the pocket of a pair of cargo pants, or maybe loose fitting jeans, and has a little pocket to carry the extra tips on the inside. I've also noticed that the earpieces are a little warm after a few minutes of use, but only when I touch them with my fingers. I can't feel it with my ears, so durability issues aside, this isn't a problem.
I'm hoping that the bass problems will get resolved over time, but so far these headphones are definitely worth the $40 I paid for them, since they should only improve from here on out. I'll try to edit this post sometime with pictures, but feel free to ask questions about them.