Some providers also provide unmetered bandwidth by giving a capped port like 100Mbps.
If you don't use much bandwidth and would like the ability to burst to say 1gbps then a metered plan is better.
If you think you may use most/all bandwidth then consider u metered
Metered/Unmetered is usually a term to describe to bandwidth limitations. When you have metered package you either have your bandwidth totally limited or partially (limits port speed after you reach a certain amount of bandwidth). Also, when you have an unmetered bandwidth that means your bandwidth is unlimited and there should not be any limitations.
The difference is in the terms actually. It is obvious what metered means and it is very much the same with unmetered. When it comes to Internet bandwidth "Unmetered" refers to the maximum capacity of the logical (or physical) port in use for any service. So, if someone offers "1 Gbps Unmetered" this is supposed to mean that the use should be able to utilize up to 1000 Mbps (1 Gbps) of internet bandwidth.