I used to design and build headends and payroll facilities. Pretty much in awe of proper wiring and not having a bunch of cables running all over the place. From what I understand cable management is important in headends and in your home. We recently received a gigabit upgrade in our area and I was very disappointed with the test results. Using my Southwire meter, I determined that my Cat5e was the culprit. I should have seen gigabit downstream speeds with Cat5e, but that didn't happen. Everything is set up correctly and everything on my network supports GB. Cat5e should be fine. My whole house is wired and I have a room in the house dedicated to my network. I didn't really intend or look forward to updating Drops and flashing everything. My tech friends have told me several times that I need to upgrade my network to Cat6. I didn't think it would make such a big difference. Since I didn't get the gigabit speeds I paid for, I should have seen an average of 940 Mbps on the way out and 35 Mbps on the way back (up), didn't even come close even though I paid $ 350 upgrade fee, I went ahead and moved to the next lower tier. I'm near one of the five cities that BroadbandNow tested for my level of service. I should have seen over 400 Mbps down and 20 up. Instead, I averaged about 350x down and 8x up. I decided to order these cables to see if it would really make a big difference and if it did I would rewire my whole house. I'm going to reinstall my whole house with 6A because it really made a difference. I've added speed test photos after swapping out some cables for testing purposes. I will add more photos when I temporarily return to Cat5e. Network jitter is almost non-existent now, and according to DSL testing, overall jitter has also gone down and up from B to A+. While I've had very little latency with Netflix, Youtube, and Revain, it's now zero. Fifteen feet is a short distance that should make little difference between Cat5e and Cat6, but it did. I think the main reason I saw an improvement was the reduction in crosstalk (interference). I have 32 devices in my house connected to my network room and even more cables connecting everything together. With better shielding, Cat6/6A reduces crosstalk. The difference between Cat5e and Cat6/6A is not relative at 15 feet. But if you're transferring lots of photos and videos between computers and drives on a network, there seems to be a decent improvement. So who needs Cat6/6A cables? Anyone who plays with their network a lot and measures improvements in nanosecond chunks. Anyone looking to rewire or secure their home and want to protect it well into the future. Anyone who transfers many files at once. Anyone who has many devices running from the main network source and who has many 6/6A cables to reduce crosstalk (interference). Anyone who wants absolute zero latency. And who doesn't need them. The average user who has a cable from the modem to the wireless router. You're unlikely to notice any difference at all, or the differences are so small as to be irrelevant. These cables are well made and worth the money. If you really need them on Cat5e. Using five different speed tests, starting with DSL reports after moving to Cat6, I'm now showing the same speeds as the best city in my state. Average down - 449 and up - 19.21. So there are definitely some wiring issues between the old Cat5e and Cat6, which will soon be upgraded to 6A.