Pros: Well made and stylish, very pleasing SQ, deep bass extension, wide soundstage, fairly comfortable, super low price
Cons: Mids? What mids?, detail/instrument separation is meh at best, some microphonics (it is a Meelec IEM after all)
These are a steal at $10-15. Their sound signature is about 5/5 bass, 2/5 mids, and 4/5 treble -- in strength/presence. Voices sound distant and a little quiet, but bass is very intelligible and surprisingly articulate for the price point. Treble is present much more than mids, and add to a general V- or checkmark-shaped signature. A wide soundstage also comes with them, which shocked me. Both vertically and horizontally, a lot wider than average.
Of course, the detail isn't impressive. There's a considerable amount of fuzz/"blur"/smearing in any intricate passages, especially in the mids. But this is to be expected at $12, lol. Their signature itself is still pleasing (and I don't even like V-shaped signatures). They almost sound like if there were a cheaper, lower model of Monster Turbine; this is where they would fit in. For any rock, you're going to be really happy with their presentation. Rap, because of the dependence on vocal presentation, is going to suffer a little, but the bass kick will still add enjoyability. I wouldn't get these for pop or classical tastes. But I don't really believe in recommending phones based on genres anyways; a good phone is a good phone. Isolation is just OK, and same with microphonics -- basically every Meelec IEM ever has microphonics issues. Not a big deal to me.
These are the perfect "throwaway" set of IEMs (if you're feeling so cavalier about money as to be able to think that). I can wrap them around my player and take them everywhere and not really worry. Definitely the best sub-$20 IEMs I've ever listened to, including other Meelec offerings. They can't really hold a candle to anything $30-40, especially in instrument separation. But for the price, you definitely get your money's worth.