reply to Metnet
Re: Bandwidth For 400 users, each at that speed, I would considering starting with at least a 100 x 100 Mbps fiber line.
Depending on where you're located, we can install a full GigE line and have it throttled down to your bandwidth requirements (then scaled up as needed).
Please note that installation can take upwards of 6+ months because of construction/build-out requirements...unless you're already in a fiber lit building..
If you want to send me your address I will check for you ASAP.