....for the average user?

I am considering going with a reseller and my packages will look like: 200MB of disk space, with 600MB of bandwidth (based on my 5GB of disk space and 15GB of bandwidth)

Naturally I am concerned about the low bandwidth (since most of you offer 1GB) - will the average person need 1GB, or will 600MB be ok? (fyi - I will not host adult web sites, mainly small business web presence sites).

thanks !