Was a pretty good cord until the rubber started to do the ...
344265
Was a pretty good cord until the rubber started to do the turtle neck thing and eventually split open /:
2416926
Worked well while they lasted, which was about 6 months.  Thicker and stiffer than most cables.  The problem seems to be the metal part of the connector that inserts into the device rather than the wires.  They were connected to tablets while we were using them - maybe we're rougher than most.
671876
The elastic in this cord wears out very quickly... luckily it's a decent sized roll.
4872073
I bought these cords specifically for the length. They worked great for the first 2 months we had them, but unfortunately they aren't of much use now. The more we used them I noticed the rubber on the cord starting to bunch up at the charging port end.
4063539
I bought two of these cords one for my car and another for my fiancee. I plugged mine in and it worked right away, but whenever we plugged hers in it was not playing because there was a short in the wire. Once we wiggled the cord around a little bit it began to play. After a week of use in my car in 30 degree weather my cord also began to cut out, needing to be wiggled in order to play properly.

Although it sometimes cuts out it has not completely died after three months of use. If it dies or anything changes I will update this review! I am sure this would be a better cord for the summer rather then the winter.
1482679
Has worked great for 3 months starting to see the rubber part come off more than normal after some extended wear and tear.
2241220
I really like the heavy duty part of these cords, but I already have one that will not work:-(
21705
This cord worked for a while and I like the color and shape, but after a few months it got really touchy. It will only charge my phone when I bend the input a certain way and then don't touch or move it. It's not a secure connection and getting really annoying when it keeps making the charging sound over and over again every time it reconnects.
1815136
The one cord out of the 2 stopped working completely after like 2 months of use. Really durable cord the other one has been
1652224
While taking my phone off of the charger, the part that is plugged in broke off of the cord and stayed in my phone. It wasn't a big deal at first since I had a second one. The second one lasted me about 2 months until it was not recognized by my phone anymore. I did like the length of the cord.
2692560
This heavy duty cord is similar to one my daughter got for me to use with my Iphone 4. It is very nice however I wish I had gotten a longer one. The one I had before, the cord broke away from the plug in right under where it plugged into my phone. It lasted less than a year, however they aren't expensive but it was disappointing. Hope I have better luck this time.

Update at September 25, 2015:
Shortly after I started using this Charger, the charge on my phone would jump if I plugged it in during the day while using it. I'm retired and I sometimes do my Pinterest on it. Anyway I thought that it was the sort of loose fit of the plug but apparently not. I always tried to be careful with the plug and it still looks pretty much like it did when I got it- it just doesn't work anymore. As I result, I don't recommend this product.
1812403
Does the job for a while until the rubber disintegrates.
3713557
It was good for a while. It provided the extra USB space I needed with so many hookups. The downside was that after about a month of moderate use, the wiring started to fray and the black casing would fall off, leaving the wires underneath unprotected... I was using it on a laptop, so I moved around a lot. Maybe it would have been better for a desktop, where the use would be stationary, and not so much stress would be put on it.
3211474
This word worked fine for a couple of months and it was convenient because the length allowed me to use my ipad while it was charging, However, the connection between the wires and the plug came away from the plug - leaving wires exposed. For a few weeks I was able to tape it with masking tape and it worked OK. But that didn't last long.  My advice is to pay more and buy an apple cord, not this knockoff.
4658873
Good cord bought two of them but all plugs now are falling out the socket, so I'm not sure if it needs to be replaced or if it's good and everything works no problem.
4289725
I was initially happy with the unit. It seemed to charge well, and I liked that its cord is less bulky the Motorola's. But... the cord is not well glued into the strain-relief at the car-plug end. The cord is pulling out and exposing the inner wires. I'm afraid it is only a matter of time until the wires break inside.
557183
Worked fine except that it was a little tight getting it in to the slot. But we've only had it six months and as of today, it stopped working. It's a basic cord and it's had basic use, nothing rough. It should have lasted several years.