cat 5 or cat 6?

[Pinkfizzy]

Hoping someone can explain why I would want one over the other? Renovating & builder asked if we wanted either? Can anyone help?

lifehacker.com/5994163/whats-the-difference-between-these-ethernet-cables-and-will-they-make-my-network-faster

That article may help a little.

Thank you!