Note:  These have an excellent, no-hassle warranty.  Skullcandy will replace them for any reason, whenever - just go to their website, register your product, and fill out the warranty form.  You will receive CREDIT for their website that you can use on whatever you like, as well as free shipping.  The amount of credit will depend upon the current price of your product on THEIR website - so for the standard INK'D buds, you will get a $20 credit.  You do not need any proof of purchase, and it does not matter how much time has passed - just pop the broken buds into a small envelope and you're good.Firstly, I want to mention a few important tidbits that you should know.1.  Pay attention to the L and R (engraved on the stem) on these earbuds, which can be hard to see.  Do not reverse them, as doing so can affect fit and sound quality.  I find putting a piece of colored tape on the right cord makes life easier.2.  Don't assume you know which gel size will fit you best; make sure you try on all 3 gel sizes that come with these, as using the wrong size can dramatically decrease sound quality and comfort.  If your earbuds are uncomfortable or the sound quality does not meet your expectations, then you likely have the wrong size gel installed.  For myself, I automatically went with the smallest size because my ears are small, but those made the earbuds sound like cheap garbage.  It wasn't until I tried the next size up did I get the full quality of sound that these are designed for.  So pay attention to this, since it really matters.3.  These have a straight plug, not an L-shaped plug.  So you will need to be extra careful as a straight-plug design increases the amount of pressure both on the plug, and the headphone jack of your player.  This leads to frayed wires or a loosening of the headphone jack, or both, which ultimately lead to the classic problem of only one side having sound.4.  The cord is long - measures approximately 4 feet, 5 inches.5.  Burn-in works with these.  Slightly.Now, as for the build quality - I'm impressed.  They are not cheaply made earbuds, despite their low price.  The wires are nice and solid, and feel very well made - not flimsy or plastic-y.  The silicone gels (tips that go in your ear) are very soft and pliable, and even have the Skullcandy logo engraved on them.  Nice touch.They feel good, too.  Really good.  Both the material, and the way they fit my annoyingly small ears.  And they don't fall out constantly, although I do sometimes get the sensation that it's getting sucked into my left ear.And yes, these come with 3 different size gels.Sound is great.  These handle bass extremely well for mid-tier earbuds, and highs aren't so shrill and piercing as with other comparable brands.  Some of this really depends on your player, too.  Even between iPods, sound quality does differ.As far as functionality goes, I find I am able to run with these with no problem.  The wires do not get tangled, and you can easily adjust the split in them with an attached slider (that has 'Skullcandy' written on it in the corresponding colour), which I find very convenient.  I do not hear this thumping sound that others claim to hear from wire-movement, so I can't confirm that.The only things I dislike are the straight plug, and the lack of a case.  Otherwise, I am thoroughly impressed with Skullcandy.  The craftsmanship, the quality of sound, and all the little extras that Skullcandy does that really lets you know that they are paying attention, and that they care about their products and end-users.Worth every penny.UPDATE 12/31/2011 - My current pair has seen daily use for over a year now with no issues. 

Question: How is the earphone?
Answer: These have an excellent