Klipsch X-10 Image - The Best In-Ear Headphones I Have Owned
I have owned a pair of Shure EC3s, Ultimate Ears SuperFi 5.1 Pro, Shure SE410s, and Etymotic hf3's.
This is the BEST PAIR I HAVE EVER OWNED. Klipsch is always first in my mind when it comes to home stereo.
For home sound I use RSX5 monitors and 10"Sub both manufactured by Klipsch.
The sound is powerful and crisp; to audiophiles they will find it very similar to the sound that Cerwin-Vega monitors or floorstanding speakers will - earth shattering, LOUD, and accurate. That's exactly what these headphones sum up.
Consider the high price what you pay for as these are the very best. Highly-regarded ergonomic design, ultra-lightweightness (they feel like nothing's there) and VERY LOUD AND CLEAR. Incredible bass with that punch in-ear's usually miss. This is a professional grade set of machines.
If you want the best there is out there when it comes to in-ear, don't even think twice. I've written a similar review for the SuperFi's a while back, but those are years old and times-they-are-changin'! This is Klipsch's first leap into in-ear territory - and this flagship model - X10 Image is the very highest quality I have had the pleasure of using to listen to my wide range of music. I highly recommend this over any other similarity on the market. Everything else has become sub-par with these available to us.

Amazing
There is no need to reiterate what other users have written. I am simply writing this review in order to enforce what others have said, and to encourage other buyers to purchase this product. This is truly an amazing product. Incredible sound quality and very comfortable.

No warranty if purchased from Amazon
The delicate wires shorted on my set and Klipsch would not honor warranty stating that Amazon was not an authorized KLIPSCH dealer. That means you are out of luck and you should consider your purchase as an "AS IS" much like EBAY>

Not worth the risk. I would look at shure or ultimate ears for alternative products. Klipsch is not the company it once was (paul, rip).

Great Sound Great Comfort
That bag hanging in my closet, yes the one with all the wires hanging out, is the headphone graveyard. I've tried most of them: BlueTooth, Nose, unSure, Toothless, you name it. These are the best so far. The sound is the first grabber. Crisp, clear, I heard details other headphones miss, classic rock and in choral music. Then, the comfort. They're very light, very small, nicely curved, and among the most comfortable out there. The isolation is good, maybe too good. If there's any drawback, they're not suitable for use in situations where you want to be aware of ambient sound, e.g. traffic. Don't use on a bicycle. For these headphones, good sound requires a good seal, so only plan on using them when your iPod is all you want to hear. Carry these plus the standard iPod/iPhone "whites" and you'll have everything you need.

S4/X10 mini-review
OK so let me start by saying i had written the most EPIC review comparing both the s4 and the x10's from when i opened them to a month after.....but somehow it didnt go through apparently; so screw writing another long EPIC one. keep this in mind as im not puttin nearly as much efford as i had put in my previous one but the points are made.

ugh i dont even wanna do this again :( im so disapponted.

Image X10 pt.1 (0)

came in a pro looking case and had great full/rich sound with tons of bass and the size of a quarter. Got them, then turned the volume up and they CRACKLED like crazy so i had to return them (UGH). now i know these were freaking tiny and stuff so i would have allowed some distortion at high volumes but this was straight up crackling from the left earphone. so while these were shipping out and junk i got the S4 in the mail as i had apparently bought them a while back but they were backordered.

Image S4 ()

so the image s4's come in a "tin can" case not as fancy but again theyre bux. they feel plastic-y* and the cord is pretty skinny so by this point im calling bs on these.
the sound is GREAT omg! wtf?! the channels are separated sooo good and the clarity/fidelity is superb. (specially for the price). Good bass, not as powerful as the X10s but these balance it better. You get such an awesome sense on depth and listening to CD quality stuff is sooo unbelievably awesome. you get to hear EVERYTHING! even flaws. so yeah im sure these aren't the best but for 80 dollars they're wayyyy better than a LOT of more expensive IEMs.....like these..

Image X10 pt.2

got another pair...awesome no crackle...still a little dist. at high volumes but again its forgiveable. these are more comfortable once you get em fitting good. the music feels to be coming from inside your head...its great. these are in a way louder...they isolate sound a lot better...so everything sounds punchy and just awesome. they lack the clarity the s4's bring though...i dont know what it is but these are more punch than anything...so if you wanna blast some hip hop or anything pretty much these are for you...but oh no! the crackle is back....:( yes the crackle came back 3 weeks later so again i had to return them :( this time i took the money.

conclusion?

its 0 vs. ...should be a no brainer right? well though they both have their pros and cons....the s4's are wayyy better to me considering i had about 3 weeks to listen to them/burn them in. im not counting the fact that my x10's broke twice against them in the off chance that i got 2 of the "bad ones" hah. the s4's are the greatest thing to come to my life since....something awesome that has come to my life previous to them. i listen to them EVERY DAY with my cd player and OMG they're awesome. get them please.