i found this specific interview very informative though it is quite disheartening to know that there no licensing organisation that regulate the quality of network cable which is why i feel that consumers should really purchase their network cables to reputable companies that ensures quality and understands the needs of consumers - and not simply sell them items that costs more when there is an aletrnative.
case in point, Cat 5e is more suitable for personal use, though obviously, Cat 6 is of superior quality, but i would advise this for those who would use it for commercial purposes (unless of course the consumer is more than happy to purchase the Cat 6, which is roughly 30% more expensive than Cat 5e).
