Originally Posted by TidalWave

unmetered means it will be capped - thus no overages, and you are free to use however much transfer (GB's) you can from that amount of capped bandwidth (Mbps).

burstable means you can go above your commit, and you could be subject to overages based off the industry standard of 95th percentile.

Don't forget guys, that bandwidth (Megabits, Mbps) is a CAPACITY amount. Your "usage" is actually TRANSFER (GB, Gigabytes) over that capacity (Mbps).