Locating Good Shell Accounts?

willis asks: "Several friends of mine will be graduating from college soon, and we're looking for a good place to get shell accounts with lots of space/bandwidth/reliability that we can do what we want with. We are currently considering two options: rolling our own by putting a box in a colocation facility, administering the box ourselves; or purchasing accounts from a commercial service. Our needs are: 20-30 users, 1-2GB/user, 0.5-1GB bandwith/user, FTP/HTTP/IMAP/SSH and expandable if neccessary. It seems like lots of people miss having good UNIX accounts after they leave school -- what is everybody else doing? Does anybody have any suggestions about good/cheap colos? Good account providers? Appropriate hardware?"